81465800

素因数分解:

$2^3\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31333}}^1$

素因数の和:31362

約数の個数: 48

約数和(自身を含む): 203984340

約数和(自身を除く): 122518540

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 25, 26, 40, 50, 52, 65, 100, 104, 130, 200, 260, 325, 520, 650, 1300, 2600, 31333, 62666, 125332, 156665, 250664, 313330, 407329, 626660, 783325, 814658, 1253320, 1566650, 1629316, 2036645, 3133300, 3258632, 4073290, 6266600, 8146580, 10183225, 16293160, 20366450, 40732900, 81465800]

約数ペア:

[(1, 81465800), (2, 40732900), (4, 20366450), (5, 16293160), (8, 10183225), (10, 8146580), (13, 6266600), (20, 4073290), (25, 3258632), (26, 3133300), (40, 2036645), (50, 1629316), (52, 1566650), (65, 1253320), (100, 814658), (104, 783325), (130, 626660), (200, 407329), (260, 313330), (325, 250664), (520, 156665), (650, 125332), (1300, 62666), (2600, 31333)]