20659380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{7027}}^1$

素因数の和:7053

約数の個数: 72

約数和(自身を含む): 67300128

約数和(自身を除く): 46640748

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, 7027, 14054, 21081, 28108, 35135, 42162, 49189, 70270, 84324, 98378, 105405, 140540, 147567, 196756, 210810, 245945, 295134, 344323, 421620, 491890, 590268, 688646, 737835, 983780, 1032969, 1377292, 1475670, 1721615, 2065938, 2951340, 3443230, 4131876, 5164845, 6886460, 10329690, 20659380]

約数ペア:

[(1, 20659380), (2, 10329690), (3, 6886460), (4, 5164845), (5, 4131876), (6, 3443230), (7, 2951340), (10, 2065938), (12, 1721615), (14, 1475670), (15, 1377292), (20, 1032969), (21, 983780), (28, 737835), (30, 688646), (35, 590268), (42, 491890), (49, 421620), (60, 344323), (70, 295134), (84, 245945), (98, 210810), (105, 196756), (140, 147567), (147, 140540), (196, 105405), (210, 98378), (245, 84324), (294, 70270), (420, 49189), (490, 42162), (588, 35135), (735, 28108), (980, 21081), (1470, 14054), (2940, 7027)]