19881264

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{151}}^1\times {\mathrm{211}}^1$

素因数の和:386

約数の個数: 80

約数和(自身を含む): 55940864

約数和(自身を除く): 36059600

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 151, 156, 208, 211, 302, 312, 422, 453, 604, 624, 633, 844, 906, 1208, 1266, 1688, 1812, 1963, 2416, 2532, 2743, 3376, 3624, 3926, 5064, 5486, 5889, 7248, 7852, 8229, 10128, 10972, 11778, 15704, 16458, 21944, 23556, 31408, 31861, 32916, 43888, 47112, 63722, 65832, 94224, 95583, 127444, 131664, 191166, 254888, 382332, 414193, 509776, 764664, 828386, 1242579, 1529328, 1656772, 2485158, 3313544, 4970316, 6627088, 9940632, 19881264]

約数ペア:

[(1, 19881264), (2, 9940632), (3, 6627088), (4, 4970316), (6, 3313544), (8, 2485158), (12, 1656772), (13, 1529328), (16, 1242579), (24, 828386), (26, 764664), (39, 509776), (48, 414193), (52, 382332), (78, 254888), (104, 191166), (151, 131664), (156, 127444), (208, 95583), (211, 94224), (302, 65832), (312, 63722), (422, 47112), (453, 43888), (604, 32916), (624, 31861), (633, 31408), (844, 23556), (906, 21944), (1208, 16458), (1266, 15704), (1688, 11778), (1812, 10972), (1963, 10128), (2416, 8229), (2532, 7852), (2743, 7248), (3376, 5889), (3624, 5486), (3926, 5064)]