21465440

素因数分解:

$2^5\times 5^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{307}}^1$

素因数の和:364

約数の個数: 96

約数和(自身を含む): 55883520

約数和(自身を除く): 34418080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 32, 38, 40, 46, 76, 80, 92, 95, 115, 152, 160, 184, 190, 230, 304, 307, 368, 380, 437, 460, 608, 614, 736, 760, 874, 920, 1228, 1520, 1535, 1748, 1840, 2185, 2456, 3040, 3070, 3496, 3680, 4370, 4912, 5833, 6140, 6992, 7061, 8740, 9824, 11666, 12280, 13984, 14122, 17480, 23332, 24560, 28244, 29165, 34960, 35305, 46664, 49120, 56488, 58330, 69920, 70610, 93328, 112976, 116660, 134159, 141220, 186656, 225952, 233320, 268318, 282440, 466640, 536636, 564880, 670795, 933280, 1073272, 1129760, 1341590, 2146544, 2683180, 4293088, 5366360, 10732720, 21465440]

約数ペア:

[(1, 21465440), (2, 10732720), (4, 5366360), (5, 4293088), (8, 2683180), (10, 2146544), (16, 1341590), (19, 1129760), (20, 1073272), (23, 933280), (32, 670795), (38, 564880), (40, 536636), (46, 466640), (76, 282440), (80, 268318), (92, 233320), (95, 225952), (115, 186656), (152, 141220), (160, 134159), (184, 116660), (190, 112976), (230, 93328), (304, 70610), (307, 69920), (368, 58330), (380, 56488), (437, 49120), (460, 46664), (608, 35305), (614, 34960), (736, 29165), (760, 28244), (874, 24560), (920, 23332), (1228, 17480), (1520, 14122), (1535, 13984), (1748, 12280), (1840, 11666), (2185, 9824), (2456, 8740), (3040, 7061), (3070, 6992), (3496, 6140), (3680, 5833), (4370, 4912)]