20191990

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{22189}}^1$

素因数の和:22216

約数の個数: 32

約数和(自身を含む): 44735040

約数和(自身を除く): 24543050

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 182, 455, 910, 22189, 44378, 110945, 155323, 221890, 288457, 310646, 576914, 776615, 1442285, 1553230, 2019199, 2884570, 4038398, 10095995, 20191990]

約数ペア:

[(1, 20191990), (2, 10095995), (5, 4038398), (7, 2884570), (10, 2019199), (13, 1553230), (14, 1442285), (26, 776615), (35, 576914), (65, 310646), (70, 288457), (91, 221890), (130, 155323), (182, 110945), (455, 44378), (910, 22189)]