120720640

素因数分解:

$2^8\times 5^1\times {\mathrm{37}}^1\times {\mathrm{2549}}^1$

素因数の和:2607

約数の個数: 72

約数和(自身を含む): 297095400

約数和(自身を除く): 176374760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 256, 296, 320, 370, 592, 640, 740, 1184, 1280, 1480, 2368, 2549, 2960, 4736, 5098, 5920, 9472, 10196, 11840, 12745, 20392, 23680, 25490, 40784, 47360, 50980, 81568, 94313, 101960, 163136, 188626, 203920, 326272, 377252, 407840, 471565, 652544, 754504, 815680, 943130, 1509008, 1631360, 1886260, 3018016, 3262720, 3772520, 6036032, 7545040, 12072064, 15090080, 24144128, 30180160, 60360320, 120720640]

約数ペア:

[(1, 120720640), (2, 60360320), (4, 30180160), (5, 24144128), (8, 15090080), (10, 12072064), (16, 7545040), (20, 6036032), (32, 3772520), (37, 3262720), (40, 3018016), (64, 1886260), (74, 1631360), (80, 1509008), (128, 943130), (148, 815680), (160, 754504), (185, 652544), (256, 471565), (296, 407840), (320, 377252), (370, 326272), (592, 203920), (640, 188626), (740, 163136), (1184, 101960), (1280, 94313), (1480, 81568), (2368, 50980), (2549, 47360), (2960, 40784), (4736, 25490), (5098, 23680), (5920, 20392), (9472, 12745), (10196, 11840)]