641587700

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{211}}^1\times {\mathrm{2339}}^1$

素因数の和:2577

約数の個数: 72

約数和(自身を含む): 1507091040

約数和(自身を除く): 865503340

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 211, 260, 325, 422, 650, 844, 1055, 1300, 2110, 2339, 2743, 4220, 4678, 5275, 5486, 9356, 10550, 10972, 11695, 13715, 21100, 23390, 27430, 30407, 46780, 54860, 58475, 60814, 68575, 116950, 121628, 137150, 152035, 233900, 274300, 304070, 493529, 608140, 760175, 987058, 1520350, 1974116, 2467645, 3040700, 4935290, 6415877, 9870580, 12338225, 12831754, 24676450, 25663508, 32079385, 49352900, 64158770, 128317540, 160396925, 320793850, 641587700]

約数ペア:

[(1, 641587700), (2, 320793850), (4, 160396925), (5, 128317540), (10, 64158770), (13, 49352900), (20, 32079385), (25, 25663508), (26, 24676450), (50, 12831754), (52, 12338225), (65, 9870580), (100, 6415877), (130, 4935290), (211, 3040700), (260, 2467645), (325, 1974116), (422, 1520350), (650, 987058), (844, 760175), (1055, 608140), (1300, 493529), (2110, 304070), (2339, 274300), (2743, 233900), (4220, 152035), (4678, 137150), (5275, 121628), (5486, 116950), (9356, 68575), (10550, 60814), (10972, 58475), (11695, 54860), (13715, 46780), (21100, 30407), (23390, 27430)]