28624005

素因数分解:

$3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:147

約数の個数: 72

約数和(自身を含む): 55171584

約数和(自身を除く): 26547579

約数列:

[1, 3, 5, 9, 15, 17, 31, 45, 51, 71, 85, 93, 153, 155, 213, 255, 279, 289, 355, 465, 527, 639, 765, 867, 1065, 1207, 1395, 1445, 1581, 2201, 2601, 2635, 3195, 3621, 4335, 4743, 6035, 6603, 7905, 8959, 10863, 11005, 13005, 18105, 19809, 20519, 23715, 26877, 33015, 37417, 44795, 54315, 61557, 80631, 99045, 102595, 112251, 134385, 184671, 187085, 307785, 336753, 403155, 561255, 636089, 923355, 1683765, 1908267, 3180445, 5724801, 9541335, 28624005]

約数ペア:

[(1, 28624005), (3, 9541335), (5, 5724801), (9, 3180445), (15, 1908267), (17, 1683765), (31, 923355), (45, 636089), (51, 561255), (71, 403155), (85, 336753), (93, 307785), (153, 187085), (155, 184671), (213, 134385), (255, 112251), (279, 102595), (289, 99045), (355, 80631), (465, 61557), (527, 54315), (639, 44795), (765, 37417), (867, 33015), (1065, 26877), (1207, 23715), (1395, 20519), (1445, 19809), (1581, 18105), (2201, 13005), (2601, 11005), (2635, 10863), (3195, 8959), (3621, 7905), (4335, 6603), (4743, 6035)]