64402780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{13037}}^1$

素因数の和:13078

約数の個数: 48

約数和(自身を含む): 153326880

約数和(自身を除く): 88924100

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 190, 247, 260, 380, 494, 988, 1235, 2470, 4940, 13037, 26074, 52148, 65185, 130370, 169481, 247703, 260740, 338962, 495406, 677924, 847405, 990812, 1238515, 1694810, 2477030, 3220139, 3389620, 4954060, 6440278, 12880556, 16100695, 32201390, 64402780]

約数ペア:

[(1, 64402780), (2, 32201390), (4, 16100695), (5, 12880556), (10, 6440278), (13, 4954060), (19, 3389620), (20, 3220139), (26, 2477030), (38, 1694810), (52, 1238515), (65, 990812), (76, 847405), (95, 677924), (130, 495406), (190, 338962), (247, 260740), (260, 247703), (380, 169481), (494, 130370), (988, 65185), (1235, 52148), (2470, 26074), (4940, 13037)]