205456420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{1877}}^1$

素因数の和:2320

約数の個数: 48

約数和(自身を含む): 465999408

約数和(自身を除く): 260542988

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 421, 842, 1684, 1877, 2105, 3754, 4210, 5473, 7508, 8420, 9385, 10946, 18770, 21892, 24401, 27365, 37540, 48802, 54730, 97604, 109460, 122005, 244010, 488020, 790217, 1580434, 3160868, 3951085, 7902170, 10272821, 15804340, 20545642, 41091284, 51364105, 102728210, 205456420]

約数ペア:

[(1, 205456420), (2, 102728210), (4, 51364105), (5, 41091284), (10, 20545642), (13, 15804340), (20, 10272821), (26, 7902170), (52, 3951085), (65, 3160868), (130, 1580434), (260, 790217), (421, 488020), (842, 244010), (1684, 122005), (1877, 109460), (2105, 97604), (3754, 54730), (4210, 48802), (5473, 37540), (7508, 27365), (8420, 24401), (9385, 21892), (10946, 18770)]