20347611980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{211}}^1\times {\mathrm{155539}}^1$

素因数の和:155790

約数の個数: 48

約数和(自身を含む): 44317701120

約数和(自身を除く): 23970089140

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 211, 310, 422, 620, 844, 1055, 2110, 4220, 6541, 13082, 26164, 32705, 65410, 130820, 155539, 311078, 622156, 777695, 1555390, 3110780, 4821709, 9643418, 19286836, 24108545, 32818729, 48217090, 65637458, 96434180, 131274916, 164093645, 328187290, 656374580, 1017380599, 2034761198, 4069522396, 5086902995, 10173805990, 20347611980]

約数ペア:

[(1, 20347611980), (2, 10173805990), (4, 5086902995), (5, 4069522396), (10, 2034761198), (20, 1017380599), (31, 656374580), (62, 328187290), (124, 164093645), (155, 131274916), (211, 96434180), (310, 65637458), (422, 48217090), (620, 32818729), (844, 24108545), (1055, 19286836), (2110, 9643418), (4220, 4821709), (6541, 3110780), (13082, 1555390), (26164, 777695), (32705, 622156), (65410, 311078), (130820, 155539)]