77878820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{2129}}^1$

素因数の和:2228

約数の個数: 48

約数和(自身を含む): 171763200

約数和(自身を除く): 93884380

約数列:

[1, 2, 4, 5, 10, 20, 31, 59, 62, 118, 124, 155, 236, 295, 310, 590, 620, 1180, 1829, 2129, 3658, 4258, 7316, 8516, 9145, 10645, 18290, 21290, 36580, 42580, 65999, 125611, 131998, 251222, 263996, 329995, 502444, 628055, 659990, 1256110, 1319980, 2512220, 3893941, 7787882, 15575764, 19469705, 38939410, 77878820]

約数ペア:

[(1, 77878820), (2, 38939410), (4, 19469705), (5, 15575764), (10, 7787882), (20, 3893941), (31, 2512220), (59, 1319980), (62, 1256110), (118, 659990), (124, 628055), (155, 502444), (236, 329995), (295, 263996), (310, 251222), (590, 131998), (620, 125611), (1180, 65999), (1829, 42580), (2129, 36580), (3658, 21290), (4258, 18290), (7316, 10645), (8516, 9145)]