81737460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{64871}}^1$

素因数の和:64893

約数の個数: 72

約数和(自身を含む): 283360896

約数和(自身を除く): 201623436

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 64871, 129742, 194613, 259484, 324355, 389226, 454097, 583839, 648710, 778452, 908194, 973065, 1167678, 1297420, 1362291, 1816388, 1946130, 2270485, 2335356, 2724582, 2919195, 3892260, 4086873, 4540970, 5449164, 5838390, 6811455, 8173746, 9081940, 11676780, 13622910, 16347492, 20434365, 27245820, 40868730, 81737460]

約数ペア:

[(1, 81737460), (2, 40868730), (3, 27245820), (4, 20434365), (5, 16347492), (6, 13622910), (7, 11676780), (9, 9081940), (10, 8173746), (12, 6811455), (14, 5838390), (15, 5449164), (18, 4540970), (20, 4086873), (21, 3892260), (28, 2919195), (30, 2724582), (35, 2335356), (36, 2270485), (42, 1946130), (45, 1816388), (60, 1362291), (63, 1297420), (70, 1167678), (84, 973065), (90, 908194), (105, 778452), (126, 648710), (140, 583839), (180, 454097), (210, 389226), (252, 324355), (315, 259484), (420, 194613), (630, 129742), (1260, 64871)]