820568450

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{193}}^1\times {\mathrm{211}}^1$

素因数の和:460

約数の個数: 96

約数和(自身を含む): 1713556992

約数和(自身を除く): 892988542

約数列:

[1, 2, 5, 10, 13, 25, 26, 31, 50, 62, 65, 130, 155, 193, 211, 310, 325, 386, 403, 422, 650, 775, 806, 965, 1055, 1550, 1930, 2015, 2110, 2509, 2743, 4030, 4825, 5018, 5275, 5486, 5983, 6541, 9650, 10075, 10550, 11966, 12545, 13082, 13715, 20150, 25090, 27430, 29915, 32705, 40723, 59830, 62725, 65410, 68575, 77779, 81446, 85033, 125450, 137150, 149575, 155558, 163525, 170066, 203615, 299150, 327050, 388895, 407230, 425165, 529399, 777790, 850330, 1018075, 1058798, 1262413, 1944475, 2036150, 2125825, 2524826, 2646995, 3888950, 4251650, 5293990, 6312065, 12624130, 13234975, 16411369, 26469950, 31560325, 32822738, 63120650, 82056845, 164113690, 410284225, 820568450]

約数ペア:

[(1, 820568450), (2, 410284225), (5, 164113690), (10, 82056845), (13, 63120650), (25, 32822738), (26, 31560325), (31, 26469950), (50, 16411369), (62, 13234975), (65, 12624130), (130, 6312065), (155, 5293990), (193, 4251650), (211, 3888950), (310, 2646995), (325, 2524826), (386, 2125825), (403, 2036150), (422, 1944475), (650, 1262413), (775, 1058798), (806, 1018075), (965, 850330), (1055, 777790), (1550, 529399), (1930, 425165), (2015, 407230), (2110, 388895), (2509, 327050), (2743, 299150), (4030, 203615), (4825, 170066), (5018, 163525), (5275, 155558), (5486, 149575), (5983, 137150), (6541, 125450), (9650, 85033), (10075, 81446), (10550, 77779), (11966, 68575), (12545, 65410), (13082, 62725), (13715, 59830), (20150, 40723), (25090, 32705), (27430, 29915)]