665917460

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{271}}^1\times {\mathrm{727}}^1$

素因数の和:1033

約数の個数: 72

約数和(自身を含む): 1521950976

約数和(自身を除く): 856033516

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 169, 260, 271, 338, 542, 676, 727, 845, 1084, 1355, 1454, 1690, 2710, 2908, 3380, 3523, 3635, 5420, 7046, 7270, 9451, 14092, 14540, 17615, 18902, 35230, 37804, 45799, 47255, 70460, 91598, 94510, 122863, 183196, 189020, 197017, 228995, 245726, 394034, 457990, 491452, 614315, 788068, 915980, 985085, 1228630, 1970170, 2457260, 2561221, 3940340, 5122442, 10244884, 12806105, 25612210, 33295873, 51224420, 66591746, 133183492, 166479365, 332958730, 665917460]

約数ペア:

[(1, 665917460), (2, 332958730), (4, 166479365), (5, 133183492), (10, 66591746), (13, 51224420), (20, 33295873), (26, 25612210), (52, 12806105), (65, 10244884), (130, 5122442), (169, 3940340), (260, 2561221), (271, 2457260), (338, 1970170), (542, 1228630), (676, 985085), (727, 915980), (845, 788068), (1084, 614315), (1355, 491452), (1454, 457990), (1690, 394034), (2710, 245726), (2908, 228995), (3380, 197017), (3523, 189020), (3635, 183196), (5420, 122863), (7046, 94510), (7270, 91598), (9451, 70460), (14092, 47255), (14540, 45799), (17615, 37804), (18902, 35230)]