19717492075

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{491}}^1\times {\mathrm{1549}}^1$

素因数の和:2128

約数の個数: 48

約数和(自身を含む): 26382909600

約数和(自身を除く): 6665417525

約数列:

[1, 5, 17, 25, 61, 85, 305, 425, 491, 1037, 1525, 1549, 2455, 5185, 7745, 8347, 12275, 25925, 26333, 29951, 38725, 41735, 94489, 131665, 149755, 208675, 472445, 509167, 658325, 748775, 760559, 1606313, 2362225, 2545835, 3802795, 8031565, 12729175, 12929503, 19013975, 40157825, 46394099, 64647515, 231970495, 323237575, 788699683, 1159852475, 3943498415, 19717492075]

約数ペア:

[(1, 19717492075), (5, 3943498415), (17, 1159852475), (25, 788699683), (61, 323237575), (85, 231970495), (305, 64647515), (425, 46394099), (491, 40157825), (1037, 19013975), (1525, 12929503), (1549, 12729175), (2455, 8031565), (5185, 3802795), (7745, 2545835), (8347, 2362225), (12275, 1606313), (25925, 760559), (26333, 748775), (29951, 658325), (38725, 509167), (41735, 472445), (94489, 208675), (131665, 149755)]