21101990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23189}}^1$

素因数の和:23216

約数の個数: 32

約数和(自身を含む): 46751040

約数和(自身を除く): 25649050

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 23189, 46378, 115945, 162323, 231890, 301457, 324646, 602914, 811615, 1507285, 1623230, 2110199, 3014570, 4220398, 10550995, 21101990]

約数ペア:

[(1, 21101990), (2, 10550995), (5, 4220398), (7, 3014570), (10, 2110199), (13, 1623230), (14, 1507285), (26, 811615), (35, 602914), (65, 324646), (70, 301457), (91, 231890), (130, 162323), (182, 115945), (455, 46378), (910, 23189)]