320850640

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{149}}^1\times {\mathrm{2447}}^1$

素因数の和:2620

約数の個数: 80

約数和(自身を含む): 819590400

約数和(自身を除く): 498739760

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 149, 176, 220, 298, 440, 596, 745, 880, 1192, 1490, 1639, 2384, 2447, 2980, 3278, 4894, 5960, 6556, 8195, 9788, 11920, 12235, 13112, 16390, 19576, 24470, 26224, 26917, 32780, 39152, 48940, 53834, 65560, 97880, 107668, 131120, 134585, 195760, 215336, 269170, 364603, 430672, 538340, 729206, 1076680, 1458412, 1823015, 2153360, 2916824, 3646030, 4010633, 5833648, 7292060, 8021266, 14584120, 16042532, 20053165, 29168240, 32085064, 40106330, 64170128, 80212660, 160425320, 320850640]

約数ペア:

[(1, 320850640), (2, 160425320), (4, 80212660), (5, 64170128), (8, 40106330), (10, 32085064), (11, 29168240), (16, 20053165), (20, 16042532), (22, 14584120), (40, 8021266), (44, 7292060), (55, 5833648), (80, 4010633), (88, 3646030), (110, 2916824), (149, 2153360), (176, 1823015), (220, 1458412), (298, 1076680), (440, 729206), (596, 538340), (745, 430672), (880, 364603), (1192, 269170), (1490, 215336), (1639, 195760), (2384, 134585), (2447, 131120), (2980, 107668), (3278, 97880), (4894, 65560), (5960, 53834), (6556, 48940), (8195, 39152), (9788, 32780), (11920, 26917), (12235, 26224), (13112, 24470), (16390, 19576)]