28456020

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{149}}^1\times {\mathrm{1061}}^1$

素因数の和:1225

約数の個数: 72

約数和(自身を含む): 86977800

約数和(自身を除く): 58521780

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 149, 180, 298, 447, 596, 745, 894, 1061, 1341, 1490, 1788, 2122, 2235, 2682, 2980, 3183, 4244, 4470, 5305, 5364, 6366, 6705, 8940, 9549, 10610, 12732, 13410, 15915, 19098, 21220, 26820, 31830, 38196, 47745, 63660, 95490, 158089, 190980, 316178, 474267, 632356, 790445, 948534, 1422801, 1580890, 1897068, 2371335, 2845602, 3161780, 4742670, 5691204, 7114005, 9485340, 14228010, 28456020]

約数ペア:

[(1, 28456020), (2, 14228010), (3, 9485340), (4, 7114005), (5, 5691204), (6, 4742670), (9, 3161780), (10, 2845602), (12, 2371335), (15, 1897068), (18, 1580890), (20, 1422801), (30, 948534), (36, 790445), (45, 632356), (60, 474267), (90, 316178), (149, 190980), (180, 158089), (298, 95490), (447, 63660), (596, 47745), (745, 38196), (894, 31830), (1061, 26820), (1341, 21220), (1490, 19098), (1788, 15915), (2122, 13410), (2235, 12732), (2682, 10610), (2980, 9549), (3183, 8940), (4244, 6705), (4470, 6366), (5305, 5364)]