20449540

素因数分解:

$2^2\times 5^1\times {\mathrm{83}}^1\times {\mathrm{97}}^1\times {\mathrm{127}}^1$

素因数の和:316

約数の個数: 48

約数和(自身を含む): 44255232

約数和(自身を除く): 23805692

約数列:

[1, 2, 4, 5, 10, 20, 83, 97, 127, 166, 194, 254, 332, 388, 415, 485, 508, 635, 830, 970, 1270, 1660, 1940, 2540, 8051, 10541, 12319, 16102, 21082, 24638, 32204, 40255, 42164, 49276, 52705, 61595, 80510, 105410, 123190, 161020, 210820, 246380, 1022477, 2044954, 4089908, 5112385, 10224770, 20449540]

約数ペア:

[(1, 20449540), (2, 10224770), (4, 5112385), (5, 4089908), (10, 2044954), (20, 1022477), (83, 246380), (97, 210820), (127, 161020), (166, 123190), (194, 105410), (254, 80510), (332, 61595), (388, 52705), (415, 49276), (485, 42164), (508, 40255), (635, 32204), (830, 24638), (970, 21082), (1270, 16102), (1660, 12319), (1940, 10541), (2540, 8051)]