71981865

素因数分解:

$3^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{1997}}^1$

素因数の和:2103

約数の個数: 40

約数和(自身を含む): 130549320

約数和(自身を除く): 58567455

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 89, 135, 267, 405, 445, 801, 1335, 1997, 2403, 4005, 5991, 7209, 9985, 12015, 17973, 29955, 36045, 53919, 89865, 161757, 177733, 269595, 533199, 808785, 888665, 1599597, 2665995, 4798791, 7997985, 14396373, 23993955, 71981865]

約数ペア:

[(1, 71981865), (3, 23993955), (5, 14396373), (9, 7997985), (15, 4798791), (27, 2665995), (45, 1599597), (81, 888665), (89, 808785), (135, 533199), (267, 269595), (405, 177733), (445, 161757), (801, 89865), (1335, 53919), (1997, 36045), (2403, 29955), (4005, 17973), (5991, 12015), (7209, 9985)]