21126240

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{863}}^1$

素因数の和:901

約数の個数: 144

約数和(自身を含む): 76422528

約数和(自身を除く): 55296288

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, 68, 72, 80, 85, 90, 96, 102, 120, 136, 144, 153, 160, 170, 180, 204, 240, 255, 272, 288, 306, 340, 360, 408, 480, 510, 544, 612, 680, 720, 765, 816, 863, 1020, 1224, 1360, 1440, 1530, 1632, 1726, 2040, 2448, 2589, 2720, 3060, 3452, 4080, 4315, 4896, 5178, 6120, 6904, 7767, 8160, 8630, 10356, 12240, 12945, 13808, 14671, 15534, 17260, 20712, 24480, 25890, 27616, 29342, 31068, 34520, 38835, 41424, 44013, 51780, 58684, 62136, 69040, 73355, 77670, 82848, 88026, 103560, 117368, 124272, 132039, 138080, 146710, 155340, 176052, 207120, 220065, 234736, 248544, 264078, 293420, 310680, 352104, 414240, 440130, 469472, 528156, 586840, 621360, 660195, 704208, 880260, 1056312, 1173680, 1242720, 1320390, 1408416, 1760520, 2112624, 2347360, 2640780, 3521040, 4225248, 5281560, 7042080, 10563120, 21126240]

約数ペア:

[(1, 21126240), (2, 10563120), (3, 7042080), (4, 5281560), (5, 4225248), (6, 3521040), (8, 2640780), (9, 2347360), (10, 2112624), (12, 1760520), (15, 1408416), (16, 1320390), (17, 1242720), (18, 1173680), (20, 1056312), (24, 880260), (30, 704208), (32, 660195), (34, 621360), (36, 586840), (40, 528156), (45, 469472), (48, 440130), (51, 414240), (60, 352104), (68, 310680), (72, 293420), (80, 264078), (85, 248544), (90, 234736), (96, 220065), (102, 207120), (120, 176052), (136, 155340), (144, 146710), (153, 138080), (160, 132039), (170, 124272), (180, 117368), (204, 103560), (240, 88026), (255, 82848), (272, 77670), (288, 73355), (306, 69040), (340, 62136), (360, 58684), (408, 51780), (480, 44013), (510, 41424), (544, 38835), (612, 34520), (680, 31068), (720, 29342), (765, 27616), (816, 25890), (863, 24480), (1020, 20712), (1224, 17260), (1360, 15534), (1440, 14671), (1530, 13808), (1632, 12945), (1726, 12240), (2040, 10356), (2448, 8630), (2589, 8160), (2720, 7767), (3060, 6904), (3452, 6120), (4080, 5178), (4315, 4896)]