81019900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{62323}}^1$

素因数の和:62350

約数の個数: 36

約数和(自身を含む): 189340312

約数和(自身を除く): 108320412

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 260, 325, 650, 1300, 62323, 124646, 249292, 311615, 623230, 810199, 1246460, 1558075, 1620398, 3116150, 3240796, 4050995, 6232300, 8101990, 16203980, 20254975, 40509950, 81019900]

約数ペア:

[(1, 81019900), (2, 40509950), (4, 20254975), (5, 16203980), (10, 8101990), (13, 6232300), (20, 4050995), (25, 3240796), (26, 3116150), (50, 1620398), (52, 1558075), (65, 1246460), (100, 810199), (130, 623230), (260, 311615), (325, 249292), (650, 124646), (1300, 62323)]