389760520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{523}}^1\times {\mathrm{601}}^1$

素因数の和:1166

約数の個数: 64

約数和(自身を含む): 908490240

約数和(自身を除く): 518729720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 523, 601, 620, 1046, 1202, 1240, 2092, 2404, 2615, 3005, 4184, 4808, 5230, 6010, 10460, 12020, 16213, 18631, 20920, 24040, 32426, 37262, 64852, 74524, 81065, 93155, 129704, 149048, 162130, 186310, 314323, 324260, 372620, 628646, 648520, 745240, 1257292, 1571615, 2514584, 3143230, 6286460, 9744013, 12572920, 19488026, 38976052, 48720065, 77952104, 97440130, 194880260, 389760520]

約数ペア:

[(1, 389760520), (2, 194880260), (4, 97440130), (5, 77952104), (8, 48720065), (10, 38976052), (20, 19488026), (31, 12572920), (40, 9744013), (62, 6286460), (124, 3143230), (155, 2514584), (248, 1571615), (310, 1257292), (523, 745240), (601, 648520), (620, 628646), (1046, 372620), (1202, 324260), (1240, 314323), (2092, 186310), (2404, 162130), (2615, 149048), (3005, 129704), (4184, 93155), (4808, 81065), (5230, 74524), (6010, 64852), (10460, 37262), (12020, 32426), (16213, 24040), (18631, 20920)]