640560

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{157}}^1$

素因数の和:190

約数の個数: 80

約数和(自身を含む): 2115936

約数和(自身を除く): 1475376

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 34, 40, 48, 51, 60, 68, 80, 85, 102, 120, 136, 157, 170, 204, 240, 255, 272, 314, 340, 408, 471, 510, 628, 680, 785, 816, 942, 1020, 1256, 1360, 1570, 1884, 2040, 2355, 2512, 2669, 3140, 3768, 4080, 4710, 5338, 6280, 7536, 8007, 9420, 10676, 12560, 13345, 16014, 18840, 21352, 26690, 32028, 37680, 40035, 42704, 53380, 64056, 80070, 106760, 128112, 160140, 213520, 320280, 640560]

約数ペア:

[(1, 640560), (2, 320280), (3, 213520), (4, 160140), (5, 128112), (6, 106760), (8, 80070), (10, 64056), (12, 53380), (15, 42704), (16, 40035), (17, 37680), (20, 32028), (24, 26690), (30, 21352), (34, 18840), (40, 16014), (48, 13345), (51, 12560), (60, 10676), (68, 9420), (80, 8007), (85, 7536), (102, 6280), (120, 5338), (136, 4710), (157, 4080), (170, 3768), (204, 3140), (240, 2669), (255, 2512), (272, 2355), (314, 2040), (340, 1884), (408, 1570), (471, 1360), (510, 1256), (628, 1020), (680, 942), (785, 816)]