20039175

素因数分解:

$3^2\times 5^2\times {\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1$

素因数の和:90

約数の個数: 108

約数和(自身を含む): 42479424

約数和(自身を除く): 22440249

約数列:

[1, 3, 5, 9, 13, 15, 17, 25, 31, 39, 45, 51, 65, 75, 85, 93, 117, 153, 155, 169, 195, 221, 225, 255, 279, 325, 403, 425, 465, 507, 527, 585, 663, 765, 775, 845, 975, 1105, 1209, 1275, 1395, 1521, 1581, 1989, 2015, 2325, 2535, 2635, 2873, 2925, 3315, 3627, 3825, 4225, 4743, 5239, 5525, 6045, 6851, 6975, 7605, 7905, 8619, 9945, 10075, 12675, 13175, 14365, 15717, 16575, 18135, 20553, 23715, 25857, 26195, 30225, 34255, 38025, 39525, 43095, 47151, 49725, 61659, 71825, 78585, 89063, 90675, 102765, 118575, 129285, 130975, 171275, 215475, 235755, 267189, 308295, 392925, 445315, 513825, 646425, 801567, 1178775, 1335945, 1541475, 2226575, 4007835, 6679725, 20039175]

約数ペア:

[(1, 20039175), (3, 6679725), (5, 4007835), (9, 2226575), (13, 1541475), (15, 1335945), (17, 1178775), (25, 801567), (31, 646425), (39, 513825), (45, 445315), (51, 392925), (65, 308295), (75, 267189), (85, 235755), (93, 215475), (117, 171275), (153, 130975), (155, 129285), (169, 118575), (195, 102765), (221, 90675), (225, 89063), (255, 78585), (279, 71825), (325, 61659), (403, 49725), (425, 47151), (465, 43095), (507, 39525), (527, 38025), (585, 34255), (663, 30225), (765, 26195), (775, 25857), (845, 23715), (975, 20553), (1105, 18135), (1209, 16575), (1275, 15717), (1395, 14365), (1521, 13175), (1581, 12675), (1989, 10075), (2015, 9945), (2325, 8619), (2535, 7905), (2635, 7605), (2873, 6975), (2925, 6851), (3315, 6045), (3627, 5525), (3825, 5239), (4225, 4743)]