257749120

素因数分解:

$2^7\times 5^1\times {\mathrm{521}}^1\times {\mathrm{773}}^1$

素因数の和:1313

約数の個数: 64

約数和(自身を含む): 618162840

約数和(自身を除く): 360413720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 521, 640, 773, 1042, 1546, 2084, 2605, 3092, 3865, 4168, 5210, 6184, 7730, 8336, 10420, 12368, 15460, 16672, 20840, 24736, 30920, 33344, 41680, 49472, 61840, 66688, 83360, 98944, 123680, 166720, 247360, 333440, 402733, 494720, 805466, 1610932, 2013665, 3221864, 4027330, 6443728, 8054660, 12887456, 16109320, 25774912, 32218640, 51549824, 64437280, 128874560, 257749120]

約数ペア:

[(1, 257749120), (2, 128874560), (4, 64437280), (5, 51549824), (8, 32218640), (10, 25774912), (16, 16109320), (20, 12887456), (32, 8054660), (40, 6443728), (64, 4027330), (80, 3221864), (128, 2013665), (160, 1610932), (320, 805466), (521, 494720), (640, 402733), (773, 333440), (1042, 247360), (1546, 166720), (2084, 123680), (2605, 98944), (3092, 83360), (3865, 66688), (4168, 61840), (5210, 49472), (6184, 41680), (7730, 33344), (8336, 30920), (10420, 24736), (12368, 20840), (15460, 16672)]