81108400

素因数分解:

$2^4\times 5^2\times {\mathrm{31}}^2\times {\mathrm{211}}^1$

素因数の和:291

約数の個数: 90

約数和(自身を含む): 202305876

約数和(自身を除く): 121197476

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 40, 50, 62, 80, 100, 124, 155, 200, 211, 248, 310, 400, 422, 496, 620, 775, 844, 961, 1055, 1240, 1550, 1688, 1922, 2110, 2480, 3100, 3376, 3844, 4220, 4805, 5275, 6200, 6541, 7688, 8440, 9610, 10550, 12400, 13082, 15376, 16880, 19220, 21100, 24025, 26164, 32705, 38440, 42200, 48050, 52328, 65410, 76880, 84400, 96100, 104656, 130820, 163525, 192200, 202771, 261640, 327050, 384400, 405542, 523280, 654100, 811084, 1013855, 1308200, 1622168, 2027710, 2616400, 3244336, 4055420, 5069275, 8110840, 10138550, 16221680, 20277100, 40554200, 81108400]

約数ペア:

[(1, 81108400), (2, 40554200), (4, 20277100), (5, 16221680), (8, 10138550), (10, 8110840), (16, 5069275), (20, 4055420), (25, 3244336), (31, 2616400), (40, 2027710), (50, 1622168), (62, 1308200), (80, 1013855), (100, 811084), (124, 654100), (155, 523280), (200, 405542), (211, 384400), (248, 327050), (310, 261640), (400, 202771), (422, 192200), (496, 163525), (620, 130820), (775, 104656), (844, 96100), (961, 84400), (1055, 76880), (1240, 65410), (1550, 52328), (1688, 48050), (1922, 42200), (2110, 38440), (2480, 32705), (3100, 26164), (3376, 24025), (3844, 21100), (4220, 19220), (4805, 16880), (5275, 15376), (6200, 13082), (6541, 12400), (7688, 10550), (8440, 9610)]