20536840

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{79}}^1\times {\mathrm{97}}^1$

素因数の和:254

約数の個数: 64

約数和(自身を含む): 47980800

約数和(自身を除く): 27443960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 79, 97, 134, 158, 194, 268, 316, 335, 388, 395, 485, 536, 632, 670, 776, 790, 970, 1340, 1580, 1940, 2680, 3160, 3880, 5293, 6499, 7663, 10586, 12998, 15326, 21172, 25996, 26465, 30652, 32495, 38315, 42344, 51992, 52930, 61304, 64990, 76630, 105860, 129980, 153260, 211720, 259960, 306520, 513421, 1026842, 2053684, 2567105, 4107368, 5134210, 10268420, 20536840]

約数ペア:

[(1, 20536840), (2, 10268420), (4, 5134210), (5, 4107368), (8, 2567105), (10, 2053684), (20, 1026842), (40, 513421), (67, 306520), (79, 259960), (97, 211720), (134, 153260), (158, 129980), (194, 105860), (268, 76630), (316, 64990), (335, 61304), (388, 52930), (395, 51992), (485, 42344), (536, 38315), (632, 32495), (670, 30652), (776, 26465), (790, 25996), (970, 21172), (1340, 15326), (1580, 12998), (1940, 10586), (2680, 7663), (3160, 6499), (3880, 5293)]