21724640

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{163}}^1$

素因数の和:209

約数の個数: 144

約数和(自身を含む): 63603792

約数和(自身を除く): 41879152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 160, 163, 170, 196, 224, 238, 245, 272, 280, 326, 340, 392, 476, 490, 544, 560, 595, 652, 680, 784, 815, 833, 952, 980, 1120, 1141, 1190, 1304, 1360, 1568, 1630, 1666, 1904, 1960, 2282, 2380, 2608, 2720, 2771, 3260, 3332, 3808, 3920, 4165, 4564, 4760, 5216, 5542, 5705, 6520, 6664, 7840, 7987, 8330, 9128, 9520, 11084, 11410, 13040, 13328, 13855, 15974, 16660, 18256, 19040, 19397, 22168, 22820, 26080, 26656, 27710, 31948, 33320, 36512, 38794, 39935, 44336, 45640, 55420, 63896, 66640, 77588, 79870, 88672, 91280, 96985, 110840, 127792, 133280, 135779, 155176, 159740, 182560, 193970, 221680, 255584, 271558, 310352, 319480, 387940, 443360, 543116, 620704, 638960, 678895, 775880, 1086232, 1277920, 1357790, 1551760, 2172464, 2715580, 3103520, 4344928, 5431160, 10862320, 21724640]

約数ペア:

[(1, 21724640), (2, 10862320), (4, 5431160), (5, 4344928), (7, 3103520), (8, 2715580), (10, 2172464), (14, 1551760), (16, 1357790), (17, 1277920), (20, 1086232), (28, 775880), (32, 678895), (34, 638960), (35, 620704), (40, 543116), (49, 443360), (56, 387940), (68, 319480), (70, 310352), (80, 271558), (85, 255584), (98, 221680), (112, 193970), (119, 182560), (136, 159740), (140, 155176), (160, 135779), (163, 133280), (170, 127792), (196, 110840), (224, 96985), (238, 91280), (245, 88672), (272, 79870), (280, 77588), (326, 66640), (340, 63896), (392, 55420), (476, 45640), (490, 44336), (544, 39935), (560, 38794), (595, 36512), (652, 33320), (680, 31948), (784, 27710), (815, 26656), (833, 26080), (952, 22820), (980, 22168), (1120, 19397), (1141, 19040), (1190, 18256), (1304, 16660), (1360, 15974), (1568, 13855), (1630, 13328), (1666, 13040), (1904, 11410), (1960, 11084), (2282, 9520), (2380, 9128), (2608, 8330), (2720, 7987), (2771, 7840), (3260, 6664), (3332, 6520), (3808, 5705), (3920, 5542), (4165, 5216), (4564, 4760)]