2687960

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{149}}^1$

素因数の和:212

約数の個数: 64

約数和(自身を含む): 6804000

約数和(自身を除く): 4116040

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 41, 44, 55, 82, 88, 110, 149, 164, 205, 220, 298, 328, 410, 440, 451, 596, 745, 820, 902, 1192, 1490, 1639, 1640, 1804, 2255, 2980, 3278, 3608, 4510, 5960, 6109, 6556, 8195, 9020, 12218, 13112, 16390, 18040, 24436, 30545, 32780, 48872, 61090, 65560, 67199, 122180, 134398, 244360, 268796, 335995, 537592, 671990, 1343980, 2687960]

約数ペア:

[(1, 2687960), (2, 1343980), (4, 671990), (5, 537592), (8, 335995), (10, 268796), (11, 244360), (20, 134398), (22, 122180), (40, 67199), (41, 65560), (44, 61090), (55, 48872), (82, 32780), (88, 30545), (110, 24436), (149, 18040), (164, 16390), (205, 13112), (220, 12218), (298, 9020), (328, 8195), (410, 6556), (440, 6109), (451, 5960), (596, 4510), (745, 3608), (820, 3278), (902, 2980), (1192, 2255), (1490, 1804), (1639, 1640)]