19779840

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{101}}^1$

素因数の和:145

約数の個数: 216

約数和(自身を含む): 73179288

約数和(自身を除く): 53399448

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 17, 18, 20, 24, 30, 32, 34, 36, 40, 45, 48, 51, 60, 64, 68, 72, 80, 85, 90, 96, 101, 102, 120, 128, 136, 144, 153, 160, 170, 180, 192, 202, 204, 240, 255, 256, 272, 288, 303, 306, 320, 340, 360, 384, 404, 408, 480, 505, 510, 544, 576, 606, 612, 640, 680, 720, 765, 768, 808, 816, 909, 960, 1010, 1020, 1088, 1152, 1212, 1224, 1280, 1360, 1440, 1515, 1530, 1616, 1632, 1717, 1818, 1920, 2020, 2040, 2176, 2304, 2424, 2448, 2720, 2880, 3030, 3060, 3232, 3264, 3434, 3636, 3840, 4040, 4080, 4352, 4545, 4848, 4896, 5151, 5440, 5760, 6060, 6120, 6464, 6528, 6868, 7272, 8080, 8160, 8585, 9090, 9696, 9792, 10302, 10880, 11520, 12120, 12240, 12928, 13056, 13736, 14544, 15453, 16160, 16320, 17170, 18180, 19392, 19584, 20604, 21760, 24240, 24480, 25755, 25856, 27472, 29088, 30906, 32320, 32640, 34340, 36360, 38784, 39168, 41208, 48480, 48960, 51510, 54944, 58176, 61812, 64640, 65280, 68680, 72720, 77265, 77568, 82416, 96960, 97920, 103020, 109888, 116352, 123624, 129280, 137360, 145440, 154530, 164832, 193920, 195840, 206040, 219776, 232704, 247248, 274720, 290880, 309060, 329664, 387840, 412080, 439552, 494496, 549440, 581760, 618120, 659328, 824160, 988992, 1098880, 1163520, 1236240, 1318656, 1648320, 1977984, 2197760, 2472480, 3296640, 3955968, 4944960, 6593280, 9889920, 19779840]

約数ペア:

[(1, 19779840), (2, 9889920), (3, 6593280), (4, 4944960), (5, 3955968), (6, 3296640), (8, 2472480), (9, 2197760), (10, 1977984), (12, 1648320), (15, 1318656), (16, 1236240), (17, 1163520), (18, 1098880), (20, 988992), (24, 824160), (30, 659328), (32, 618120), (34, 581760), (36, 549440), (40, 494496), (45, 439552), (48, 412080), (51, 387840), (60, 329664), (64, 309060), (68, 290880), (72, 274720), (80, 247248), (85, 232704), (90, 219776), (96, 206040), (101, 195840), (102, 193920), (120, 164832), (128, 154530), (136, 145440), (144, 137360), (153, 129280), (160, 123624), (170, 116352), (180, 109888), (192, 103020), (202, 97920), (204, 96960), (240, 82416), (255, 77568), (256, 77265), (272, 72720), (288, 68680), (303, 65280), (306, 64640), (320, 61812), (340, 58176), (360, 54944), (384, 51510), (404, 48960), (408, 48480), (480, 41208), (505, 39168), (510, 38784), (544, 36360), (576, 34340), (606, 32640), (612, 32320), (640, 30906), (680, 29088), (720, 27472), (765, 25856), (768, 25755), (808, 24480), (816, 24240), (909, 21760), (960, 20604), (1010, 19584), (1020, 19392), (1088, 18180), (1152, 17170), (1212, 16320), (1224, 16160), (1280, 15453), (1360, 14544), (1440, 13736), (1515, 13056), (1530, 12928), (1616, 12240), (1632, 12120), (1717, 11520), (1818, 10880), (1920, 10302), (2020, 9792), (2040, 9696), (2176, 9090), (2304, 8585), (2424, 8160), (2448, 8080), (2720, 7272), (2880, 6868), (3030, 6528), (3060, 6464), (3232, 6120), (3264, 6060), (3434, 5760), (3636, 5440), (3840, 5151), (4040, 4896), (4080, 4848), (4352, 4545)]