78500720

素因数分解:

$2^4\times 5^1\times {\mathrm{79}}^1\times {\mathrm{12421}}^1$

素因数の和:12513

約数の個数: 40

約数和(自身を含む): 184839360

約数和(自身を除く): 106338640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 79, 80, 158, 316, 395, 632, 790, 1264, 1580, 3160, 6320, 12421, 24842, 49684, 62105, 99368, 124210, 198736, 248420, 496840, 981259, 993680, 1962518, 3925036, 4906295, 7850072, 9812590, 15700144, 19625180, 39250360, 78500720]

約数ペア:

[(1, 78500720), (2, 39250360), (4, 19625180), (5, 15700144), (8, 9812590), (10, 7850072), (16, 4906295), (20, 3925036), (40, 1962518), (79, 993680), (80, 981259), (158, 496840), (316, 248420), (395, 198736), (632, 124210), (790, 99368), (1264, 62105), (1580, 49684), (3160, 24842), (6320, 12421)]