19881840

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{443}}^1$

素因数の和:487

約数の個数: 160

約数和(自身を含む): 71352576

約数和(自身を除く): 51470736

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 102, 110, 120, 132, 136, 165, 170, 176, 187, 204, 220, 240, 255, 264, 272, 330, 340, 374, 408, 440, 443, 510, 528, 561, 660, 680, 748, 816, 880, 886, 935, 1020, 1122, 1320, 1329, 1360, 1496, 1772, 1870, 2040, 2215, 2244, 2640, 2658, 2805, 2992, 3544, 3740, 4080, 4430, 4488, 4873, 5316, 5610, 6645, 7088, 7480, 7531, 8860, 8976, 9746, 10632, 11220, 13290, 14619, 14960, 15062, 17720, 19492, 21264, 22440, 22593, 24365, 26580, 29238, 30124, 35440, 37655, 38984, 44880, 45186, 48730, 53160, 58476, 60248, 73095, 75310, 77968, 82841, 90372, 97460, 106320, 112965, 116952, 120496, 146190, 150620, 165682, 180744, 194920, 225930, 233904, 248523, 292380, 301240, 331364, 361488, 389840, 414205, 451860, 497046, 584760, 602480, 662728, 828410, 903720, 994092, 1169520, 1242615, 1325456, 1656820, 1807440, 1988184, 2485230, 3313640, 3976368, 4970460, 6627280, 9940920, 19881840]

約数ペア:

[(1, 19881840), (2, 9940920), (3, 6627280), (4, 4970460), (5, 3976368), (6, 3313640), (8, 2485230), (10, 1988184), (11, 1807440), (12, 1656820), (15, 1325456), (16, 1242615), (17, 1169520), (20, 994092), (22, 903720), (24, 828410), (30, 662728), (33, 602480), (34, 584760), (40, 497046), (44, 451860), (48, 414205), (51, 389840), (55, 361488), (60, 331364), (66, 301240), (68, 292380), (80, 248523), (85, 233904), (88, 225930), (102, 194920), (110, 180744), (120, 165682), (132, 150620), (136, 146190), (165, 120496), (170, 116952), (176, 112965), (187, 106320), (204, 97460), (220, 90372), (240, 82841), (255, 77968), (264, 75310), (272, 73095), (330, 60248), (340, 58476), (374, 53160), (408, 48730), (440, 45186), (443, 44880), (510, 38984), (528, 37655), (561, 35440), (660, 30124), (680, 29238), (748, 26580), (816, 24365), (880, 22593), (886, 22440), (935, 21264), (1020, 19492), (1122, 17720), (1320, 15062), (1329, 14960), (1360, 14619), (1496, 13290), (1772, 11220), (1870, 10632), (2040, 9746), (2215, 8976), (2244, 8860), (2640, 7531), (2658, 7480), (2805, 7088), (2992, 6645), (3544, 5610), (3740, 5316), (4080, 4873), (4430, 4488)]