2015901980

素因数分解:

$2^2\times 5^1\times {\mathrm{157}}^1\times {\mathrm{181}}^1\times {\mathrm{3547}}^1$

素因数の和:3894

約数の個数: 48

約数和(自身を含む): 4285104096

約数和(自身を除く): 2269202116

約数列:

[1, 2, 4, 5, 10, 20, 157, 181, 314, 362, 628, 724, 785, 905, 1570, 1810, 3140, 3547, 3620, 7094, 14188, 17735, 28417, 35470, 56834, 70940, 113668, 142085, 284170, 556879, 568340, 642007, 1113758, 1284014, 2227516, 2568028, 2784395, 3210035, 5568790, 6420070, 11137580, 12840140, 100795099, 201590198, 403180396, 503975495, 1007950990, 2015901980]

約数ペア:

[(1, 2015901980), (2, 1007950990), (4, 503975495), (5, 403180396), (10, 201590198), (20, 100795099), (157, 12840140), (181, 11137580), (314, 6420070), (362, 5568790), (628, 3210035), (724, 2784395), (785, 2568028), (905, 2227516), (1570, 1284014), (1810, 1113758), (3140, 642007), (3547, 568340), (3620, 556879), (7094, 284170), (14188, 142085), (17735, 113668), (28417, 70940), (35470, 56834)]