31398735

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^2\times {\mathrm{131}}^1$

素因数の和:216

約数の個数: 48

約数和(自身を含む): 55186560

約数和(自身を除く): 23787825

約数列:

[1, 3, 5, 15, 19, 29, 57, 87, 95, 131, 145, 285, 393, 435, 551, 655, 841, 1653, 1965, 2489, 2523, 2755, 3799, 4205, 7467, 8265, 11397, 12445, 12615, 15979, 18995, 37335, 47937, 56985, 72181, 79895, 110171, 216543, 239685, 330513, 360905, 550855, 1082715, 1652565, 2093249, 6279747, 10466245, 31398735]

約数ペア:

[(1, 31398735), (3, 10466245), (5, 6279747), (15, 2093249), (19, 1652565), (29, 1082715), (57, 550855), (87, 360905), (95, 330513), (131, 239685), (145, 216543), (285, 110171), (393, 79895), (435, 72181), (551, 56985), (655, 47937), (841, 37335), (1653, 18995), (1965, 15979), (2489, 12615), (2523, 12445), (2755, 11397), (3799, 8265), (4205, 7467)]