261181620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{207287}}^1$

素因数の和:207309

約数の個数: 72

約数和(自身を含む): 905433984

約数和(自身を除く): 644252364

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, 207287, 414574, 621861, 829148, 1036435, 1243722, 1451009, 1865583, 2072870, 2487444, 2902018, 3109305, 3731166, 4145740, 4353027, 5804036, 6218610, 7255045, 7462332, 8706054, 9327915, 12437220, 13059081, 14510090, 17412108, 18655830, 21765135, 26118162, 29020180, 37311660, 43530270, 52236324, 65295405, 87060540, 130590810, 261181620]

約数ペア:

[(1, 261181620), (2, 130590810), (3, 87060540), (4, 65295405), (5, 52236324), (6, 43530270), (7, 37311660), (9, 29020180), (10, 26118162), (12, 21765135), (14, 18655830), (15, 17412108), (18, 14510090), (20, 13059081), (21, 12437220), (28, 9327915), (30, 8706054), (35, 7462332), (36, 7255045), (42, 6218610), (45, 5804036), (60, 4353027), (63, 4145740), (70, 3731166), (84, 3109305), (90, 2902018), (105, 2487444), (126, 2072870), (140, 1865583), (180, 1451009), (210, 1243722), (252, 1036435), (315, 829148), (420, 621861), (630, 414574), (1260, 207287)]