81497640

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{97021}}^1$

素因数の和:97042

約数の個数: 64

約数和(自身を含む): 279423360

約数和(自身を除く): 197925720

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 420, 840, 97021, 194042, 291063, 388084, 485105, 582126, 679147, 776168, 970210, 1164252, 1358294, 1455315, 1940420, 2037441, 2328504, 2716588, 2910630, 3395735, 3880840, 4074882, 5433176, 5821260, 6791470, 8149764, 10187205, 11642520, 13582940, 16299528, 20374410, 27165880, 40748820, 81497640]

約数ペア:

[(1, 81497640), (2, 40748820), (3, 27165880), (4, 20374410), (5, 16299528), (6, 13582940), (7, 11642520), (8, 10187205), (10, 8149764), (12, 6791470), (14, 5821260), (15, 5433176), (20, 4074882), (21, 3880840), (24, 3395735), (28, 2910630), (30, 2716588), (35, 2328504), (40, 2037441), (42, 1940420), (56, 1455315), (60, 1358294), (70, 1164252), (84, 970210), (105, 776168), (120, 679147), (140, 582126), (168, 485105), (210, 388084), (280, 291063), (420, 194042), (840, 97021)]