65440180

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1019}}^1$

素因数の和:1073

約数の個数: 72

約数和(自身を含む): 156794400

約数和(自身を除く): 91354220

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 26, 38, 52, 65, 76, 95, 130, 169, 190, 247, 260, 338, 380, 494, 676, 845, 988, 1019, 1235, 1690, 2038, 2470, 3211, 3380, 4076, 4940, 5095, 6422, 10190, 12844, 13247, 16055, 19361, 20380, 26494, 32110, 38722, 52988, 64220, 66235, 77444, 96805, 132470, 172211, 193610, 251693, 264940, 344422, 387220, 503386, 688844, 861055, 1006772, 1258465, 1722110, 2516930, 3272009, 3444220, 5033860, 6544018, 13088036, 16360045, 32720090, 65440180]

約数ペア:

[(1, 65440180), (2, 32720090), (4, 16360045), (5, 13088036), (10, 6544018), (13, 5033860), (19, 3444220), (20, 3272009), (26, 2516930), (38, 1722110), (52, 1258465), (65, 1006772), (76, 861055), (95, 688844), (130, 503386), (169, 387220), (190, 344422), (247, 264940), (260, 251693), (338, 193610), (380, 172211), (494, 132470), (676, 96805), (845, 77444), (988, 66235), (1019, 64220), (1235, 52988), (1690, 38722), (2038, 32110), (2470, 26494), (3211, 20380), (3380, 19361), (4076, 16055), (4940, 13247), (5095, 12844), (6422, 10190)]