642922140

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{218681}}^1$

素因数の和:218707

約数の個数: 72

約数和(自身を含む): 2094098832

約数和(自身を除く): 1451176692

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, 218681, 437362, 656043, 874724, 1093405, 1312086, 1530767, 2186810, 2624172, 3061534, 3280215, 4373620, 4592301, 6123068, 6560430, 7653835, 9184602, 10715369, 13120860, 15307670, 18369204, 21430738, 22961505, 30615340, 32146107, 42861476, 45923010, 53576845, 64292214, 91846020, 107153690, 128584428, 160730535, 214307380, 321461070, 642922140]

約数ペア:

[(1, 642922140), (2, 321461070), (3, 214307380), (4, 160730535), (5, 128584428), (6, 107153690), (7, 91846020), (10, 64292214), (12, 53576845), (14, 45923010), (15, 42861476), (20, 32146107), (21, 30615340), (28, 22961505), (30, 21430738), (35, 18369204), (42, 15307670), (49, 13120860), (60, 10715369), (70, 9184602), (84, 7653835), (98, 6560430), (105, 6123068), (140, 4592301), (147, 4373620), (196, 3280215), (210, 3061534), (245, 2624172), (294, 2186810), (420, 1530767), (490, 1312086), (588, 1093405), (735, 874724), (980, 656043), (1470, 437362), (2940, 218681)]