28740985

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:194

約数の個数: 48

約数和(自身を含む): 44060544

約数和(自身を除く): 15319559

約数列:

[1, 5, 7, 13, 35, 43, 65, 91, 113, 169, 215, 301, 455, 559, 565, 791, 845, 1183, 1469, 1505, 2795, 3913, 3955, 4859, 5915, 7267, 7345, 10283, 19097, 19565, 24295, 34013, 36335, 50869, 51415, 63167, 95485, 133679, 170065, 254345, 315835, 442169, 668395, 821171, 2210845, 4105855, 5748197, 28740985]

約数ペア:

[(1, 28740985), (5, 5748197), (7, 4105855), (13, 2210845), (35, 821171), (43, 668395), (65, 442169), (91, 315835), (113, 254345), (169, 170065), (215, 133679), (301, 95485), (455, 63167), (559, 51415), (565, 50869), (791, 36335), (845, 34013), (1183, 24295), (1469, 19565), (1505, 19097), (2795, 10283), (3913, 7345), (3955, 7267), (4859, 5915)]