20189607280

素因数分解:

$2^4\times 5^1\times {\mathrm{89}}^1\times {\mathrm{149}}^1\times {\mathrm{19031}}^1$

素因数の和:19282

約数の個数: 80

約数和(自身を含む): 47789352000

約数和(自身を除く): 27599744720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 89, 149, 178, 298, 356, 445, 596, 712, 745, 890, 1192, 1424, 1490, 1780, 2384, 2980, 3560, 5960, 7120, 11920, 13261, 19031, 26522, 38062, 53044, 66305, 76124, 95155, 106088, 132610, 152248, 190310, 212176, 265220, 304496, 380620, 530440, 761240, 1060880, 1522480, 1693759, 2835619, 3387518, 5671238, 6775036, 8468795, 11342476, 13550072, 14178095, 16937590, 22684952, 27100144, 28356190, 33875180, 45369904, 56712380, 67750360, 113424760, 135500720, 226849520, 252370091, 504740182, 1009480364, 1261850455, 2018960728, 2523700910, 4037921456, 5047401820, 10094803640, 20189607280]

約数ペア:

[(1, 20189607280), (2, 10094803640), (4, 5047401820), (5, 4037921456), (8, 2523700910), (10, 2018960728), (16, 1261850455), (20, 1009480364), (40, 504740182), (80, 252370091), (89, 226849520), (149, 135500720), (178, 113424760), (298, 67750360), (356, 56712380), (445, 45369904), (596, 33875180), (712, 28356190), (745, 27100144), (890, 22684952), (1192, 16937590), (1424, 14178095), (1490, 13550072), (1780, 11342476), (2384, 8468795), (2980, 6775036), (3560, 5671238), (5960, 3387518), (7120, 2835619), (11920, 1693759), (13261, 1522480), (19031, 1060880), (26522, 761240), (38062, 530440), (53044, 380620), (66305, 304496), (76124, 265220), (95155, 212176), (106088, 190310), (132610, 152248)]