21026720

素因数分解:

$2^5\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{919}}^1$

素因数の和:958

約数の個数: 96

約数和(自身を含む): 58423680

約数和(自身を除く): 37396960

約数列:

[1, 2, 4, 5, 8, 10, 11, 13, 16, 20, 22, 26, 32, 40, 44, 52, 55, 65, 80, 88, 104, 110, 130, 143, 160, 176, 208, 220, 260, 286, 352, 416, 440, 520, 572, 715, 880, 919, 1040, 1144, 1430, 1760, 1838, 2080, 2288, 2860, 3676, 4576, 4595, 5720, 7352, 9190, 10109, 11440, 11947, 14704, 18380, 20218, 22880, 23894, 29408, 36760, 40436, 47788, 50545, 59735, 73520, 80872, 95576, 101090, 119470, 131417, 147040, 161744, 191152, 202180, 238940, 262834, 323488, 382304, 404360, 477880, 525668, 657085, 808720, 955760, 1051336, 1314170, 1617440, 1911520, 2102672, 2628340, 4205344, 5256680, 10513360, 21026720]

約数ペア:

[(1, 21026720), (2, 10513360), (4, 5256680), (5, 4205344), (8, 2628340), (10, 2102672), (11, 1911520), (13, 1617440), (16, 1314170), (20, 1051336), (22, 955760), (26, 808720), (32, 657085), (40, 525668), (44, 477880), (52, 404360), (55, 382304), (65, 323488), (80, 262834), (88, 238940), (104, 202180), (110, 191152), (130, 161744), (143, 147040), (160, 131417), (176, 119470), (208, 101090), (220, 95576), (260, 80872), (286, 73520), (352, 59735), (416, 50545), (440, 47788), (520, 40436), (572, 36760), (715, 29408), (880, 23894), (919, 22880), (1040, 20218), (1144, 18380), (1430, 14704), (1760, 11947), (1838, 11440), (2080, 10109), (2288, 9190), (2860, 7352), (3676, 5720), (4576, 4595)]