19878456

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^4\times {\mathrm{29}}^1$

素因数の和:90

約数の個数: 80

約数和(自身を含む): 55693800

約数和(自身を除く): 35815344

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 29, 39, 52, 58, 78, 87, 104, 116, 156, 169, 174, 232, 312, 338, 348, 377, 507, 676, 696, 754, 1014, 1131, 1352, 1508, 2028, 2197, 2262, 3016, 4056, 4394, 4524, 4901, 6591, 8788, 9048, 9802, 13182, 14703, 17576, 19604, 26364, 28561, 29406, 39208, 52728, 57122, 58812, 63713, 85683, 114244, 117624, 127426, 171366, 191139, 228488, 254852, 342732, 382278, 509704, 685464, 764556, 828269, 1529112, 1656538, 2484807, 3313076, 4969614, 6626152, 9939228, 19878456]

約数ペア:

[(1, 19878456), (2, 9939228), (3, 6626152), (4, 4969614), (6, 3313076), (8, 2484807), (12, 1656538), (13, 1529112), (24, 828269), (26, 764556), (29, 685464), (39, 509704), (52, 382278), (58, 342732), (78, 254852), (87, 228488), (104, 191139), (116, 171366), (156, 127426), (169, 117624), (174, 114244), (232, 85683), (312, 63713), (338, 58812), (348, 57122), (377, 52728), (507, 39208), (676, 29406), (696, 28561), (754, 26364), (1014, 19604), (1131, 17576), (1352, 14703), (1508, 13182), (2028, 9802), (2197, 9048), (2262, 8788), (3016, 6591), (4056, 4901), (4394, 4524)]