19493968

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{149}}^1$

素因数の和:224

約数の個数: 80

約数和(自身を含む): 44528400

約数和(自身を除く): 25034432

約数列:

[1, 2, 4, 8, 13, 16, 17, 26, 34, 37, 52, 68, 74, 104, 136, 148, 149, 208, 221, 272, 296, 298, 442, 481, 592, 596, 629, 884, 962, 1192, 1258, 1768, 1924, 1937, 2384, 2516, 2533, 3536, 3848, 3874, 5032, 5066, 5513, 7696, 7748, 8177, 10064, 10132, 11026, 15496, 16354, 20264, 22052, 30992, 32708, 32929, 40528, 44104, 65416, 65858, 71669, 88208, 93721, 130832, 131716, 143338, 187442, 263432, 286676, 374884, 526864, 573352, 749768, 1146704, 1218373, 1499536, 2436746, 4873492, 9746984, 19493968]

約数ペア:

[(1, 19493968), (2, 9746984), (4, 4873492), (8, 2436746), (13, 1499536), (16, 1218373), (17, 1146704), (26, 749768), (34, 573352), (37, 526864), (52, 374884), (68, 286676), (74, 263432), (104, 187442), (136, 143338), (148, 131716), (149, 130832), (208, 93721), (221, 88208), (272, 71669), (296, 65858), (298, 65416), (442, 44104), (481, 40528), (592, 32929), (596, 32708), (629, 30992), (884, 22052), (962, 20264), (1192, 16354), (1258, 15496), (1768, 11026), (1924, 10132), (1937, 10064), (2384, 8177), (2516, 7748), (2533, 7696), (3536, 5513), (3848, 5066), (3874, 5032)]