61690020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{20983}}^1$

素因数の和:21009

約数の個数: 72

約数和(自身を含む): 200942784

約数和(自身を除く): 139252764

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 140, 147, 196, 210, 245, 294, 420, 490, 588, 735, 980, 1470, 2940, 20983, 41966, 62949, 83932, 104915, 125898, 146881, 209830, 251796, 293762, 314745, 419660, 440643, 587524, 629490, 734405, 881286, 1028167, 1258980, 1468810, 1762572, 2056334, 2203215, 2937620, 3084501, 4112668, 4406430, 5140835, 6169002, 8812860, 10281670, 12338004, 15422505, 20563340, 30845010, 61690020]

約数ペア:

[(1, 61690020), (2, 30845010), (3, 20563340), (4, 15422505), (5, 12338004), (6, 10281670), (7, 8812860), (10, 6169002), (12, 5140835), (14, 4406430), (15, 4112668), (20, 3084501), (21, 2937620), (28, 2203215), (30, 2056334), (35, 1762572), (42, 1468810), (49, 1258980), (60, 1028167), (70, 881286), (84, 734405), (98, 629490), (105, 587524), (140, 440643), (147, 419660), (196, 314745), (210, 293762), (245, 251796), (294, 209830), (420, 146881), (490, 125898), (588, 104915), (735, 83932), (980, 62949), (1470, 41966), (2940, 20983)]