20247726980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{395309}}^1$

素因数の和:395528

約数の個数: 48

約数和(自身を含む): 46023571440

約数和(自身を除く): 25775844460

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 197, 260, 394, 788, 985, 1970, 2561, 3940, 5122, 10244, 12805, 25610, 51220, 395309, 790618, 1581236, 1976545, 3953090, 5139017, 7906180, 10278034, 20556068, 25695085, 51390170, 77875873, 102780340, 155751746, 311503492, 389379365, 778758730, 1012386349, 1557517460, 2024772698, 4049545396, 5061931745, 10123863490, 20247726980]

約数ペア:

[(1, 20247726980), (2, 10123863490), (4, 5061931745), (5, 4049545396), (10, 2024772698), (13, 1557517460), (20, 1012386349), (26, 778758730), (52, 389379365), (65, 311503492), (130, 155751746), (197, 102780340), (260, 77875873), (394, 51390170), (788, 25695085), (985, 20556068), (1970, 10278034), (2561, 7906180), (3940, 5139017), (5122, 3953090), (10244, 1976545), (12805, 1581236), (25610, 790618), (51220, 395309)]