28126120

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{659}}^1$

素因数の和:778

約数の個数: 64

約数和(自身を含む): 69854400

約数和(自身を除く): 41728280

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 97, 110, 194, 220, 388, 440, 485, 659, 776, 970, 1067, 1318, 1940, 2134, 2636, 3295, 3880, 4268, 5272, 5335, 6590, 7249, 8536, 10670, 13180, 14498, 21340, 26360, 28996, 36245, 42680, 57992, 63923, 72490, 127846, 144980, 255692, 289960, 319615, 511384, 639230, 703153, 1278460, 1406306, 2556920, 2812612, 3515765, 5625224, 7031530, 14063060, 28126120]

約数ペア:

[(1, 28126120), (2, 14063060), (4, 7031530), (5, 5625224), (8, 3515765), (10, 2812612), (11, 2556920), (20, 1406306), (22, 1278460), (40, 703153), (44, 639230), (55, 511384), (88, 319615), (97, 289960), (110, 255692), (194, 144980), (220, 127846), (388, 72490), (440, 63923), (485, 57992), (659, 42680), (776, 36245), (970, 28996), (1067, 26360), (1318, 21340), (1940, 14498), (2134, 13180), (2636, 10670), (3295, 8536), (3880, 7249), (4268, 6590), (5272, 5335)]