19881690521

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{2711}}^1$

素因数の和:2894

約数の個数: 64

約数和(自身を含む): 26768351232

約数和(自身を除く): 6886660711

約数列:

[1, 7, 11, 23, 41, 77, 101, 161, 253, 287, 451, 707, 943, 1111, 1771, 2323, 2711, 3157, 4141, 6601, 7777, 10373, 16261, 18977, 25553, 28987, 29821, 45551, 62353, 72611, 95243, 111151, 178871, 208747, 273811, 318857, 436471, 666701, 685883, 778057, 1047673, 1222661, 1916677, 2556473, 3011921, 4801181, 6297653, 7333711, 8558627, 11226251, 17895311, 21083447, 28121203, 44083571, 69274183, 78583757, 123488761, 196848421, 258203773, 484919281, 864421327, 1807426411, 2840241503, 19881690521]

約数ペア:

[(1, 19881690521), (7, 2840241503), (11, 1807426411), (23, 864421327), (41, 484919281), (77, 258203773), (101, 196848421), (161, 123488761), (253, 78583757), (287, 69274183), (451, 44083571), (707, 28121203), (943, 21083447), (1111, 17895311), (1771, 11226251), (2323, 8558627), (2711, 7333711), (3157, 6297653), (4141, 4801181), (6601, 3011921), (7777, 2556473), (10373, 1916677), (16261, 1222661), (18977, 1047673), (25553, 778057), (28987, 685883), (29821, 666701), (45551, 436471), (62353, 318857), (72611, 273811), (95243, 208747), (111151, 178871)]