309988840

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{503}}^1$

素因数の和:623

約数の個数: 128

約数和(自身を含む): 836075520

約数和(自身を除く): 526086680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 71, 124, 140, 142, 155, 217, 248, 280, 284, 310, 355, 434, 497, 503, 568, 620, 710, 868, 994, 1006, 1085, 1240, 1420, 1736, 1988, 2012, 2170, 2201, 2485, 2515, 2840, 3521, 3976, 4024, 4340, 4402, 4970, 5030, 7042, 8680, 8804, 9940, 10060, 11005, 14084, 15407, 15593, 17605, 17608, 19880, 20120, 22010, 28168, 30814, 31186, 35210, 35713, 44020, 61628, 62372, 70420, 71426, 77035, 77965, 88040, 109151, 123256, 124744, 140840, 142852, 154070, 155930, 178565, 218302, 249991, 285704, 308140, 311860, 357130, 436604, 499982, 545755, 616280, 623720, 714260, 873208, 999964, 1091510, 1107103, 1249955, 1428520, 1999928, 2183020, 2214206, 2499910, 4366040, 4428412, 4999820, 5535515, 7749721, 8856824, 9999640, 11071030, 15499442, 22142060, 30998884, 38748605, 44284120, 61997768, 77497210, 154994420, 309988840]

約数ペア:

[(1, 309988840), (2, 154994420), (4, 77497210), (5, 61997768), (7, 44284120), (8, 38748605), (10, 30998884), (14, 22142060), (20, 15499442), (28, 11071030), (31, 9999640), (35, 8856824), (40, 7749721), (56, 5535515), (62, 4999820), (70, 4428412), (71, 4366040), (124, 2499910), (140, 2214206), (142, 2183020), (155, 1999928), (217, 1428520), (248, 1249955), (280, 1107103), (284, 1091510), (310, 999964), (355, 873208), (434, 714260), (497, 623720), (503, 616280), (568, 545755), (620, 499982), (710, 436604), (868, 357130), (994, 311860), (1006, 308140), (1085, 285704), (1240, 249991), (1420, 218302), (1736, 178565), (1988, 155930), (2012, 154070), (2170, 142852), (2201, 140840), (2485, 124744), (2515, 123256), (2840, 109151), (3521, 88040), (3976, 77965), (4024, 77035), (4340, 71426), (4402, 70420), (4970, 62372), (5030, 61628), (7042, 44020), (8680, 35713), (8804, 35210), (9940, 31186), (10060, 30814), (11005, 28168), (14084, 22010), (15407, 20120), (15593, 19880), (17605, 17608)]