80640175

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{257}}^1$

素因数の和:448

約数の個数: 48

約数和(自身を含む): 125920512

約数和(自身を除く): 45280337

約数列:

[1, 5, 7, 11, 25, 35, 55, 77, 163, 175, 257, 275, 385, 815, 1141, 1285, 1793, 1799, 1925, 2827, 4075, 5705, 6425, 8965, 8995, 12551, 14135, 19789, 28525, 41891, 44825, 44975, 62755, 70675, 98945, 209455, 293237, 313775, 460801, 494725, 1047275, 1466185, 2304005, 3225607, 7330925, 11520025, 16128035, 80640175]

約数ペア:

[(1, 80640175), (5, 16128035), (7, 11520025), (11, 7330925), (25, 3225607), (35, 2304005), (55, 1466185), (77, 1047275), (163, 494725), (175, 460801), (257, 313775), (275, 293237), (385, 209455), (815, 98945), (1141, 70675), (1285, 62755), (1793, 44975), (1799, 44825), (1925, 41891), (2827, 28525), (4075, 19789), (5705, 14135), (6425, 12551), (8965, 8995)]