21269950

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{761}}^1$

素因数の和:829

約数の個数: 48

約数和(自身を含む): 43653456

約数和(自身を除く): 22383506

約数列:

[1, 2, 5, 10, 13, 25, 26, 43, 50, 65, 86, 130, 215, 325, 430, 559, 650, 761, 1075, 1118, 1522, 2150, 2795, 3805, 5590, 7610, 9893, 13975, 19025, 19786, 27950, 32723, 38050, 49465, 65446, 98930, 163615, 247325, 327230, 425399, 494650, 818075, 850798, 1636150, 2126995, 4253990, 10634975, 21269950]

約数ペア:

[(1, 21269950), (2, 10634975), (5, 4253990), (10, 2126995), (13, 1636150), (25, 850798), (26, 818075), (43, 494650), (50, 425399), (65, 327230), (86, 247325), (130, 163615), (215, 98930), (325, 65446), (430, 49465), (559, 38050), (650, 32723), (761, 27950), (1075, 19786), (1118, 19025), (1522, 13975), (2150, 9893), (2795, 7610), (3805, 5590)]