290279920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{74051}}^1$

素因数の和:74078

約数の個数: 60

約数和(自身を含む): 785099304

約数和(自身を除く): 494819384

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 74051, 148102, 296204, 370255, 518357, 592408, 740510, 1036714, 1184816, 1481020, 2073428, 2591785, 2962040, 3628499, 4146856, 5183570, 5924080, 7256998, 8293712, 10367140, 14513996, 18142495, 20734280, 29027992, 36284990, 41468560, 58055984, 72569980, 145139960, 290279920]

約数ペア:

[(1, 290279920), (2, 145139960), (4, 72569980), (5, 58055984), (7, 41468560), (8, 36284990), (10, 29027992), (14, 20734280), (16, 18142495), (20, 14513996), (28, 10367140), (35, 8293712), (40, 7256998), (49, 5924080), (56, 5183570), (70, 4146856), (80, 3628499), (98, 2962040), (112, 2591785), (140, 2073428), (196, 1481020), (245, 1184816), (280, 1036714), (392, 740510), (490, 592408), (560, 518357), (784, 370255), (980, 296204), (1960, 148102), (3920, 74051)]