19727890

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1$

素因数の和:216

約数の個数: 96

約数和(自身を含む): 47113920

約数和(自身を除く): 27386030

約数列:

[1, 2, 5, 7, 10, 13, 14, 19, 26, 35, 38, 49, 65, 70, 91, 95, 98, 130, 133, 163, 182, 190, 245, 247, 266, 326, 455, 490, 494, 637, 665, 815, 910, 931, 1141, 1235, 1274, 1330, 1630, 1729, 1862, 2119, 2282, 2470, 3097, 3185, 3458, 4238, 4655, 5705, 6194, 6370, 7987, 8645, 9310, 10595, 11410, 12103, 14833, 15485, 15974, 17290, 21190, 21679, 24206, 29666, 30970, 39935, 40261, 43358, 60515, 74165, 79870, 80522, 103831, 108395, 121030, 148330, 151753, 201305, 207662, 216790, 281827, 303506, 402610, 519155, 563654, 758765, 1038310, 1409135, 1517530, 1972789, 2818270, 3945578, 9863945, 19727890]

約数ペア:

[(1, 19727890), (2, 9863945), (5, 3945578), (7, 2818270), (10, 1972789), (13, 1517530), (14, 1409135), (19, 1038310), (26, 758765), (35, 563654), (38, 519155), (49, 402610), (65, 303506), (70, 281827), (91, 216790), (95, 207662), (98, 201305), (130, 151753), (133, 148330), (163, 121030), (182, 108395), (190, 103831), (245, 80522), (247, 79870), (266, 74165), (326, 60515), (455, 43358), (490, 40261), (494, 39935), (637, 30970), (665, 29666), (815, 24206), (910, 21679), (931, 21190), (1141, 17290), (1235, 15974), (1274, 15485), (1330, 14833), (1630, 12103), (1729, 11410), (1862, 10595), (2119, 9310), (2282, 8645), (2470, 7987), (3097, 6370), (3185, 6194), (3458, 5705), (4238, 4655)]