28214420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{108517}}^1$

素因数の和:108539

約数の個数: 24

約数和(自身を含む): 63808584

約数和(自身を除く): 35594164

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 108517, 217034, 434068, 542585, 1085170, 1410721, 2170340, 2821442, 5642884, 7053605, 14107210, 28214420]

約数ペア:

[(1, 28214420), (2, 14107210), (4, 7053605), (5, 5642884), (10, 2821442), (13, 2170340), (20, 1410721), (26, 1085170), (52, 542585), (65, 434068), (130, 217034), (260, 108517)]