20194687900

素因数分解:

$2^2\times 5^2\times {\mathrm{173}}^1\times {\mathrm{479}}^1\times {\mathrm{2437}}^1$

素因数の和:3103

約数の個数: 72

約数和(自身を含む): 44185921920

約数和(自身を除く): 23991234020

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 173, 346, 479, 692, 865, 958, 1730, 1916, 2395, 2437, 3460, 4325, 4790, 4874, 8650, 9580, 9748, 11975, 12185, 17300, 23950, 24370, 47900, 48740, 60925, 82867, 121850, 165734, 243700, 331468, 414335, 421601, 828670, 843202, 1167323, 1657340, 1686404, 2071675, 2108005, 2334646, 4143350, 4216010, 4669292, 5836615, 8286700, 8432020, 10540025, 11673230, 21080050, 23346460, 29183075, 42160100, 58366150, 116732300, 201946879, 403893758, 807787516, 1009734395, 2019468790, 4038937580, 5048671975, 10097343950, 20194687900]

約数ペア:

[(1, 20194687900), (2, 10097343950), (4, 5048671975), (5, 4038937580), (10, 2019468790), (20, 1009734395), (25, 807787516), (50, 403893758), (100, 201946879), (173, 116732300), (346, 58366150), (479, 42160100), (692, 29183075), (865, 23346460), (958, 21080050), (1730, 11673230), (1916, 10540025), (2395, 8432020), (2437, 8286700), (3460, 5836615), (4325, 4669292), (4790, 4216010), (4874, 4143350), (8650, 2334646), (9580, 2108005), (9748, 2071675), (11975, 1686404), (12185, 1657340), (17300, 1167323), (23950, 843202), (24370, 828670), (47900, 421601), (48740, 414335), (60925, 331468), (82867, 243700), (121850, 165734)]