28211300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{21701}}^1$

素因数の和:21728

約数の個数: 36

約数和(自身を含む): 65930676

約数和(自身を除く): 37719376

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 21701, 43402, 86804, 108505, 217010, 282113, 434020, 542525, 564226, 1085050, 1128452, 1410565, 2170100, 2821130, 5642260, 7052825, 14105650, 28211300]

約数ペア:

[(1, 28211300), (2, 14105650), (4, 7052825), (5, 5642260), (10, 2821130), (13, 2170100), (20, 1410565), (25, 1128452), (26, 1085050), (50, 564226), (52, 542525), (65, 434020), (100, 282113), (130, 217010), (260, 108505), (325, 86804), (650, 43402), (1300, 21701)]