31231725

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{101}}^1$

素因数の和:171

約数の個数: 96

約数和(自身を含む): 64757760

約数和(自身を除く): 33526035

約数列:

[1, 3, 5, 7, 15, 19, 21, 25, 31, 35, 57, 75, 93, 95, 101, 105, 133, 155, 175, 217, 285, 303, 399, 465, 475, 505, 525, 589, 651, 665, 707, 775, 1085, 1425, 1515, 1767, 1919, 1995, 2121, 2325, 2525, 2945, 3131, 3255, 3325, 3535, 4123, 5425, 5757, 7575, 8835, 9393, 9595, 9975, 10605, 12369, 13433, 14725, 15655, 16275, 17675, 20615, 21917, 28785, 40299, 44175, 46965, 47975, 53025, 59489, 61845, 65751, 67165, 78275, 103075, 109585, 143925, 178467, 201495, 234825, 297445, 309225, 328755, 335825, 416423, 547925, 892335, 1007475, 1249269, 1487225, 1643775, 2082115, 4461675, 6246345, 10410575, 31231725]

約数ペア:

[(1, 31231725), (3, 10410575), (5, 6246345), (7, 4461675), (15, 2082115), (19, 1643775), (21, 1487225), (25, 1249269), (31, 1007475), (35, 892335), (57, 547925), (75, 416423), (93, 335825), (95, 328755), (101, 309225), (105, 297445), (133, 234825), (155, 201495), (175, 178467), (217, 143925), (285, 109585), (303, 103075), (399, 78275), (465, 67165), (475, 65751), (505, 61845), (525, 59489), (589, 53025), (651, 47975), (665, 46965), (707, 44175), (775, 40299), (1085, 28785), (1425, 21917), (1515, 20615), (1767, 17675), (1919, 16275), (1995, 15655), (2121, 14725), (2325, 13433), (2525, 12369), (2945, 10605), (3131, 9975), (3255, 9595), (3325, 9393), (3535, 8835), (4123, 7575), (5425, 5757)]