20389920

素因数分解:

$2^5\times 3^1\times 5^1\times {\mathrm{107}}^1\times {\mathrm{397}}^1$

素因数の和:522

約数の個数: 96

約数和(自身を含む): 64991808

約数和(自身を除く): 44601888

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 107, 120, 160, 214, 240, 321, 397, 428, 480, 535, 642, 794, 856, 1070, 1191, 1284, 1588, 1605, 1712, 1985, 2140, 2382, 2568, 3176, 3210, 3424, 3970, 4280, 4764, 5136, 5955, 6352, 6420, 7940, 8560, 9528, 10272, 11910, 12704, 12840, 15880, 17120, 19056, 23820, 25680, 31760, 38112, 42479, 47640, 51360, 63520, 84958, 95280, 127437, 169916, 190560, 212395, 254874, 339832, 424790, 509748, 637185, 679664, 849580, 1019496, 1274370, 1359328, 1699160, 2038992, 2548740, 3398320, 4077984, 5097480, 6796640, 10194960, 20389920]

約数ペア:

[(1, 20389920), (2, 10194960), (3, 6796640), (4, 5097480), (5, 4077984), (6, 3398320), (8, 2548740), (10, 2038992), (12, 1699160), (15, 1359328), (16, 1274370), (20, 1019496), (24, 849580), (30, 679664), (32, 637185), (40, 509748), (48, 424790), (60, 339832), (80, 254874), (96, 212395), (107, 190560), (120, 169916), (160, 127437), (214, 95280), (240, 84958), (321, 63520), (397, 51360), (428, 47640), (480, 42479), (535, 38112), (642, 31760), (794, 25680), (856, 23820), (1070, 19056), (1191, 17120), (1284, 15880), (1588, 12840), (1605, 12704), (1712, 11910), (1985, 10272), (2140, 9528), (2382, 8560), (2568, 7940), (3176, 6420), (3210, 6352), (3424, 5955), (3970, 5136), (4280, 4764)]