81293440

素因数分解:

$2^7\times 5^1\times {\mathrm{37}}^1\times {\mathrm{3433}}^1$

素因数の和:3489

約数の個数: 64

約数和(自身を含む): 199652760

約数和(自身を除く): 118359320

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 37, 40, 64, 74, 80, 128, 148, 160, 185, 296, 320, 370, 592, 640, 740, 1184, 1480, 2368, 2960, 3433, 4736, 5920, 6866, 11840, 13732, 17165, 23680, 27464, 34330, 54928, 68660, 109856, 127021, 137320, 219712, 254042, 274640, 439424, 508084, 549280, 635105, 1016168, 1098560, 1270210, 2032336, 2197120, 2540420, 4064672, 5080840, 8129344, 10161680, 16258688, 20323360, 40646720, 81293440]

約数ペア:

[(1, 81293440), (2, 40646720), (4, 20323360), (5, 16258688), (8, 10161680), (10, 8129344), (16, 5080840), (20, 4064672), (32, 2540420), (37, 2197120), (40, 2032336), (64, 1270210), (74, 1098560), (80, 1016168), (128, 635105), (148, 549280), (160, 508084), (185, 439424), (296, 274640), (320, 254042), (370, 219712), (592, 137320), (640, 127021), (740, 109856), (1184, 68660), (1480, 54928), (2368, 34330), (2960, 27464), (3433, 23680), (4736, 17165), (5920, 13732), (6866, 11840)]