21255572

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{6701}}^1$

素因数の和:6779

約数の個数: 24

約数和(自身を含む): 40721352

約数和(自身を除く): 19465780

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1586, 3172, 6701, 13402, 26804, 87113, 174226, 348452, 408761, 817522, 1635044, 5313893, 10627786, 21255572]

約数ペア:

[(1, 21255572), (2, 10627786), (4, 5313893), (13, 1635044), (26, 817522), (52, 408761), (61, 348452), (122, 174226), (244, 87113), (793, 26804), (1586, 13402), (3172, 6701)]