19844825

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{61}}^1$

素因数の和:115

約数の個数: 72

約数和(自身を含む): 33765696

約数和(自身を除く): 13920871

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 61, 65, 77, 91, 143, 169, 175, 275, 305, 325, 385, 427, 455, 671, 715, 793, 845, 1001, 1183, 1525, 1859, 1925, 2135, 2275, 3355, 3575, 3965, 4225, 4697, 5005, 5551, 5915, 8723, 9295, 10309, 10675, 13013, 16775, 19825, 23485, 25025, 27755, 29575, 43615, 46475, 51545, 61061, 65065, 72163, 113399, 117425, 138775, 218075, 257725, 305305, 325325, 360815, 566995, 793793, 1526525, 1804075, 2834975, 3968965, 19844825]

約数ペア:

[(1, 19844825), (5, 3968965), (7, 2834975), (11, 1804075), (13, 1526525), (25, 793793), (35, 566995), (55, 360815), (61, 325325), (65, 305305), (77, 257725), (91, 218075), (143, 138775), (169, 117425), (175, 113399), (275, 72163), (305, 65065), (325, 61061), (385, 51545), (427, 46475), (455, 43615), (671, 29575), (715, 27755), (793, 25025), (845, 23485), (1001, 19825), (1183, 16775), (1525, 13013), (1859, 10675), (1925, 10309), (2135, 9295), (2275, 8723), (3355, 5915), (3575, 5551), (3965, 5005), (4225, 4697)]