644826520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{16987}}^1$

素因数の和:17084

約数の個数: 64

約数和(自身を含む): 1583961120

約数和(自身を除く): 939134600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 73, 104, 130, 146, 260, 292, 365, 520, 584, 730, 949, 1460, 1898, 2920, 3796, 4745, 7592, 9490, 16987, 18980, 33974, 37960, 67948, 84935, 135896, 169870, 220831, 339740, 441662, 679480, 883324, 1104155, 1240051, 1766648, 2208310, 2480102, 4416620, 4960204, 6200255, 8833240, 9920408, 12400510, 16120663, 24801020, 32241326, 49602040, 64482652, 80603315, 128965304, 161206630, 322413260, 644826520]

約数ペア:

[(1, 644826520), (2, 322413260), (4, 161206630), (5, 128965304), (8, 80603315), (10, 64482652), (13, 49602040), (20, 32241326), (26, 24801020), (40, 16120663), (52, 12400510), (65, 9920408), (73, 8833240), (104, 6200255), (130, 4960204), (146, 4416620), (260, 2480102), (292, 2208310), (365, 1766648), (520, 1240051), (584, 1104155), (730, 883324), (949, 679480), (1460, 441662), (1898, 339740), (2920, 220831), (3796, 169870), (4745, 135896), (7592, 84935), (9490, 67948), (16987, 37960), (18980, 33974)]