1280821710

素因数分解:

$2^1\times 3^1\times 5^1\times 7^1\times {\mathrm{199}}^1\times {\mathrm{30649}}^1$

素因数の和:30865

約数の個数: 64

約数和(自身を含む): 3530880000

約数和(自身を除く): 2250058290

約数列:

[1, 2, 3, 5, 6, 7, 10, 14, 15, 21, 30, 35, 42, 70, 105, 199, 210, 398, 597, 995, 1194, 1393, 1990, 2786, 2985, 4179, 5970, 6965, 8358, 13930, 20895, 30649, 41790, 61298, 91947, 153245, 183894, 214543, 306490, 429086, 459735, 643629, 919470, 1072715, 1287258, 2145430, 3218145, 6099151, 6436290, 12198302, 18297453, 30495755, 36594906, 42694057, 60991510, 85388114, 91487265, 128082171, 182974530, 213470285, 256164342, 426940570, 640410855, 1280821710]

約数ペア:

[(1, 1280821710), (2, 640410855), (3, 426940570), (5, 256164342), (6, 213470285), (7, 182974530), (10, 128082171), (14, 91487265), (15, 85388114), (21, 60991510), (30, 42694057), (35, 36594906), (42, 30495755), (70, 18297453), (105, 12198302), (199, 6436290), (210, 6099151), (398, 3218145), (597, 2145430), (995, 1287258), (1194, 1072715), (1393, 919470), (1990, 643629), (2786, 459735), (2985, 429086), (4179, 306490), (5970, 214543), (6965, 183894), (8358, 153245), (13930, 91947), (20895, 61298), (30649, 41790)]