1561494025

素因数分解:

$5^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{3163}}^1$

素因数の和:3231

約数の個数: 72

約数和(自身を含む): 2504673024

約数和(自身を除く): 943178999

約数列:

[1, 5, 7, 13, 25, 31, 35, 49, 65, 91, 155, 175, 217, 245, 325, 403, 455, 637, 775, 1085, 1225, 1519, 2015, 2275, 2821, 3163, 3185, 5425, 7595, 10075, 14105, 15815, 15925, 19747, 22141, 37975, 41119, 70525, 79075, 98053, 98735, 110705, 154987, 205595, 287833, 490265, 493675, 553525, 686371, 774935, 1027975, 1274689, 1439165, 2014831, 2451325, 3431855, 3874675, 4804597, 6373445, 7195825, 8922823, 10074155, 17159275, 24022985, 31867225, 44614115, 50370775, 62459761, 120114925, 223070575, 312298805, 1561494025]

約数ペア:

[(1, 1561494025), (5, 312298805), (7, 223070575), (13, 120114925), (25, 62459761), (31, 50370775), (35, 44614115), (49, 31867225), (65, 24022985), (91, 17159275), (155, 10074155), (175, 8922823), (217, 7195825), (245, 6373445), (325, 4804597), (403, 3874675), (455, 3431855), (637, 2451325), (775, 2014831), (1085, 1439165), (1225, 1274689), (1519, 1027975), (2015, 774935), (2275, 686371), (2821, 553525), (3163, 493675), (3185, 490265), (5425, 287833), (7595, 205595), (10075, 154987), (14105, 110705), (15815, 98735), (15925, 98053), (19747, 79075), (22141, 70525), (37975, 41119)]