20196800

素因数分解:

$2^6\times 5^2\times {\mathrm{13}}^1\times {\mathrm{971}}^1$

素因数の和:1006

約数の個数: 84

約数和(自身を含む): 53574696

約数和(自身を除く): 33377896

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 25, 26, 32, 40, 50, 52, 64, 65, 80, 100, 104, 130, 160, 200, 208, 260, 320, 325, 400, 416, 520, 650, 800, 832, 971, 1040, 1300, 1600, 1942, 2080, 2600, 3884, 4160, 4855, 5200, 7768, 9710, 10400, 12623, 15536, 19420, 20800, 24275, 25246, 31072, 38840, 48550, 50492, 62144, 63115, 77680, 97100, 100984, 126230, 155360, 194200, 201968, 252460, 310720, 315575, 388400, 403936, 504920, 631150, 776800, 807872, 1009840, 1262300, 1553600, 2019680, 2524600, 4039360, 5049200, 10098400, 20196800]

約数ペア:

[(1, 20196800), (2, 10098400), (4, 5049200), (5, 4039360), (8, 2524600), (10, 2019680), (13, 1553600), (16, 1262300), (20, 1009840), (25, 807872), (26, 776800), (32, 631150), (40, 504920), (50, 403936), (52, 388400), (64, 315575), (65, 310720), (80, 252460), (100, 201968), (104, 194200), (130, 155360), (160, 126230), (200, 100984), (208, 97100), (260, 77680), (320, 63115), (325, 62144), (400, 50492), (416, 48550), (520, 38840), (650, 31072), (800, 25246), (832, 24275), (971, 20800), (1040, 19420), (1300, 15536), (1600, 12623), (1942, 10400), (2080, 9710), (2600, 7768), (3884, 5200), (4160, 4855)]