28233855

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{167}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 56320992

約数和(自身を除く): 28087137

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 117, 153, 167, 195, 221, 255, 289, 501, 585, 663, 765, 835, 867, 1105, 1445, 1503, 1989, 2171, 2505, 2601, 2839, 3315, 3757, 4335, 6513, 7515, 8517, 9945, 10855, 11271, 13005, 14195, 18785, 19539, 25551, 32565, 33813, 36907, 42585, 48263, 56355, 97695, 110721, 127755, 144789, 169065, 184535, 241315, 332163, 434367, 553605, 627419, 723945, 1660815, 1882257, 2171835, 3137095, 5646771, 9411285, 28233855]

約数ペア:

[(1, 28233855), (3, 9411285), (5, 5646771), (9, 3137095), (13, 2171835), (15, 1882257), (17, 1660815), (39, 723945), (45, 627419), (51, 553605), (65, 434367), (85, 332163), (117, 241315), (153, 184535), (167, 169065), (195, 144789), (221, 127755), (255, 110721), (289, 97695), (501, 56355), (585, 48263), (663, 42585), (765, 36907), (835, 33813), (867, 32565), (1105, 25551), (1445, 19539), (1503, 18785), (1989, 14195), (2171, 13005), (2505, 11271), (2601, 10855), (2839, 9945), (3315, 8517), (3757, 7515), (4335, 6513)]