20131757420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{173}}^1\times {\mathrm{373}}^1\times {\mathrm{821}}^1$

素因数の和:1395

約数の個数: 96

約数和(自身を含む): 44933676480

約数和(自身を除く): 24801919060

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 173, 190, 346, 373, 380, 692, 746, 821, 865, 1492, 1642, 1730, 1865, 3284, 3287, 3460, 3730, 4105, 6574, 7087, 7460, 8210, 13148, 14174, 15599, 16420, 16435, 28348, 31198, 32870, 35435, 62396, 64529, 65740, 70870, 77995, 129058, 141740, 142033, 155990, 258116, 284066, 306233, 311980, 322645, 568132, 612466, 645290, 710165, 1224932, 1226051, 1290580, 1420330, 1531165, 2452102, 2698627, 2840660, 3062330, 4904204, 5397254, 5818427, 6124660, 6130255, 10794508, 11636854, 12260510, 13493135, 23273708, 24521020, 26986270, 29092135, 52978309, 53972540, 58184270, 105956618, 116368540, 211913236, 264891545, 529783090, 1006587871, 1059566180, 2013175742, 4026351484, 5032939355, 10065878710, 20131757420]

約数ペア:

[(1, 20131757420), (2, 10065878710), (4, 5032939355), (5, 4026351484), (10, 2013175742), (19, 1059566180), (20, 1006587871), (38, 529783090), (76, 264891545), (95, 211913236), (173, 116368540), (190, 105956618), (346, 58184270), (373, 53972540), (380, 52978309), (692, 29092135), (746, 26986270), (821, 24521020), (865, 23273708), (1492, 13493135), (1642, 12260510), (1730, 11636854), (1865, 10794508), (3284, 6130255), (3287, 6124660), (3460, 5818427), (3730, 5397254), (4105, 4904204), (6574, 3062330), (7087, 2840660), (7460, 2698627), (8210, 2452102), (13148, 1531165), (14174, 1420330), (15599, 1290580), (16420, 1226051), (16435, 1224932), (28348, 710165), (31198, 645290), (32870, 612466), (35435, 568132), (62396, 322645), (64529, 311980), (65740, 306233), (70870, 284066), (77995, 258116), (129058, 155990), (141740, 142033)]