213520

素因数分解:

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

素因数の和:187

約数の個数: 40

約数和(自身を含む): 528984

約数和(自身を除く): 315464

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 157, 170, 272, 314, 340, 628, 680, 785, 1256, 1360, 1570, 2512, 2669, 3140, 5338, 6280, 10676, 12560, 13345, 21352, 26690, 42704, 53380, 106760, 213520]

約数ペア:

[(1, 213520), (2, 106760), (4, 53380), (5, 42704), (8, 26690), (10, 21352), (16, 13345), (17, 12560), (20, 10676), (34, 6280), (40, 5338), (68, 3140), (80, 2669), (85, 2512), (136, 1570), (157, 1360), (170, 1256), (272, 785), (314, 680), (340, 628)]