19400420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:165

約数の個数: 96

約数和(自身を含む): 47416320

約数和(自身を除く): 28015900

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 29, 31, 52, 58, 62, 65, 83, 116, 124, 130, 145, 155, 166, 260, 290, 310, 332, 377, 403, 415, 580, 620, 754, 806, 830, 899, 1079, 1508, 1612, 1660, 1798, 1885, 2015, 2158, 2407, 2573, 3596, 3770, 4030, 4316, 4495, 4814, 5146, 5395, 7540, 8060, 8990, 9628, 10292, 10790, 11687, 12035, 12865, 17980, 21580, 23374, 24070, 25730, 31291, 33449, 46748, 48140, 51460, 58435, 62582, 66898, 74617, 116870, 125164, 133796, 149234, 156455, 167245, 233740, 298468, 312910, 334490, 373085, 625820, 668980, 746170, 970021, 1492340, 1940042, 3880084, 4850105, 9700210, 19400420]

約数ペア:

[(1, 19400420), (2, 9700210), (4, 4850105), (5, 3880084), (10, 1940042), (13, 1492340), (20, 970021), (26, 746170), (29, 668980), (31, 625820), (52, 373085), (58, 334490), (62, 312910), (65, 298468), (83, 233740), (116, 167245), (124, 156455), (130, 149234), (145, 133796), (155, 125164), (166, 116870), (260, 74617), (290, 66898), (310, 62582), (332, 58435), (377, 51460), (403, 48140), (415, 46748), (580, 33449), (620, 31291), (754, 25730), (806, 24070), (830, 23374), (899, 21580), (1079, 17980), (1508, 12865), (1612, 12035), (1660, 11687), (1798, 10790), (1885, 10292), (2015, 9628), (2158, 8990), (2407, 8060), (2573, 7540), (3596, 5395), (3770, 5146), (4030, 4814), (4316, 4495)]