207485420

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1\times {\mathrm{631}}^1$

素因数の和:1082

約数の個数: 48

約数和(自身を含む): 448168896

約数和(自身を除く): 240683476

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 401, 410, 631, 802, 820, 1262, 1604, 2005, 2524, 3155, 4010, 6310, 8020, 12620, 16441, 25871, 32882, 51742, 65764, 82205, 103484, 129355, 164410, 253031, 258710, 328820, 506062, 517420, 1012124, 1265155, 2530310, 5060620, 10374271, 20748542, 41497084, 51871355, 103742710, 207485420]

約数ペア:

[(1, 207485420), (2, 103742710), (4, 51871355), (5, 41497084), (10, 20748542), (20, 10374271), (41, 5060620), (82, 2530310), (164, 1265155), (205, 1012124), (401, 517420), (410, 506062), (631, 328820), (802, 258710), (820, 253031), (1262, 164410), (1604, 129355), (2005, 103484), (2524, 82205), (3155, 65764), (4010, 51742), (6310, 32882), (8020, 25871), (12620, 16441)]