81070720

素因数分解:

$2^7\times 5^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{113}}^1$

素因数の和:210

約数の個数: 128

約数和(自身を含む): 209304000

約数和(自身を除く): 128233280

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 32, 38, 40, 59, 64, 76, 80, 95, 113, 118, 128, 152, 160, 190, 226, 236, 295, 304, 320, 380, 452, 472, 565, 590, 608, 640, 760, 904, 944, 1121, 1130, 1180, 1216, 1520, 1808, 1888, 2147, 2242, 2260, 2360, 2432, 3040, 3616, 3776, 4294, 4484, 4520, 4720, 5605, 6080, 6667, 7232, 7552, 8588, 8968, 9040, 9440, 10735, 11210, 12160, 13334, 14464, 17176, 17936, 18080, 18880, 21470, 22420, 26668, 33335, 34352, 35872, 36160, 37760, 42940, 44840, 53336, 66670, 68704, 71744, 72320, 85880, 89680, 106672, 126673, 133340, 137408, 143488, 171760, 179360, 213344, 253346, 266680, 274816, 343520, 358720, 426688, 506692, 533360, 633365, 687040, 717440, 853376, 1013384, 1066720, 1266730, 1374080, 2026768, 2133440, 2533460, 4053536, 4266880, 5066920, 8107072, 10133840, 16214144, 20267680, 40535360, 81070720]

約数ペア:

[(1, 81070720), (2, 40535360), (4, 20267680), (5, 16214144), (8, 10133840), (10, 8107072), (16, 5066920), (19, 4266880), (20, 4053536), (32, 2533460), (38, 2133440), (40, 2026768), (59, 1374080), (64, 1266730), (76, 1066720), (80, 1013384), (95, 853376), (113, 717440), (118, 687040), (128, 633365), (152, 533360), (160, 506692), (190, 426688), (226, 358720), (236, 343520), (295, 274816), (304, 266680), (320, 253346), (380, 213344), (452, 179360), (472, 171760), (565, 143488), (590, 137408), (608, 133340), (640, 126673), (760, 106672), (904, 89680), (944, 85880), (1121, 72320), (1130, 71744), (1180, 68704), (1216, 66670), (1520, 53336), (1808, 44840), (1888, 42940), (2147, 37760), (2242, 36160), (2260, 35872), (2360, 34352), (2432, 33335), (3040, 26668), (3616, 22420), (3776, 21470), (4294, 18880), (4484, 18080), (4520, 17936), (4720, 17176), (5605, 14464), (6080, 13334), (6667, 12160), (7232, 11210), (7552, 10735), (8588, 9440), (8968, 9040)]