31210425

素因数分解:

$3^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{163}}^1$

素因数の和:239

約数の個数: 72

約数和(自身を含む): 60275904

約数和(自身を除く): 29065479

約数列:

[1, 3, 5, 9, 15, 23, 25, 37, 45, 69, 75, 111, 115, 163, 185, 207, 225, 333, 345, 489, 555, 575, 815, 851, 925, 1035, 1467, 1665, 1725, 2445, 2553, 2775, 3749, 4075, 4255, 5175, 6031, 7335, 7659, 8325, 11247, 12225, 12765, 18093, 18745, 21275, 30155, 33741, 36675, 38295, 54279, 56235, 63825, 90465, 93725, 138713, 150775, 168705, 191475, 271395, 281175, 416139, 452325, 693565, 843525, 1248417, 1356975, 2080695, 3467825, 6242085, 10403475, 31210425]

約数ペア:

[(1, 31210425), (3, 10403475), (5, 6242085), (9, 3467825), (15, 2080695), (23, 1356975), (25, 1248417), (37, 843525), (45, 693565), (69, 452325), (75, 416139), (111, 281175), (115, 271395), (163, 191475), (185, 168705), (207, 150775), (225, 138713), (333, 93725), (345, 90465), (489, 63825), (555, 56235), (575, 54279), (815, 38295), (851, 36675), (925, 33741), (1035, 30155), (1467, 21275), (1665, 18745), (1725, 18093), (2445, 12765), (2553, 12225), (2775, 11247), (3749, 8325), (4075, 7659), (4255, 7335), (5175, 6031)]