21400160

素因数分解:

$2^5\times 5^1\times {\mathrm{131}}^1\times {\mathrm{1021}}^1$

素因数の和:1167

約数の個数: 48

約数和(自身を含む): 50993712

約数和(自身を除く): 29593552

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 131, 160, 262, 524, 655, 1021, 1048, 1310, 2042, 2096, 2620, 4084, 4192, 5105, 5240, 8168, 10210, 10480, 16336, 20420, 20960, 32672, 40840, 81680, 133751, 163360, 267502, 535004, 668755, 1070008, 1337510, 2140016, 2675020, 4280032, 5350040, 10700080, 21400160]

約数ペア:

[(1, 21400160), (2, 10700080), (4, 5350040), (5, 4280032), (8, 2675020), (10, 2140016), (16, 1337510), (20, 1070008), (32, 668755), (40, 535004), (80, 267502), (131, 163360), (160, 133751), (262, 81680), (524, 40840), (655, 32672), (1021, 20960), (1048, 20420), (1310, 16336), (2042, 10480), (2096, 10210), (2620, 8168), (4084, 5240), (4192, 5105)]