215920908

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{877}}^1\times {\mathrm{977}}^1$

素因数の和:1871

約数の個数: 72

約数和(自身を含む): 625121952

約数和(自身を除く): 409201044

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 252, 877, 977, 1754, 1954, 2631, 2931, 3508, 3908, 5262, 5862, 6139, 6839, 7893, 8793, 10524, 11724, 12278, 13678, 15786, 17586, 18417, 20517, 24556, 27356, 31572, 35172, 36834, 41034, 55251, 61551, 73668, 82068, 110502, 123102, 221004, 246204, 856829, 1713658, 2570487, 3427316, 5140974, 5997803, 7711461, 10281948, 11995606, 15422922, 17993409, 23991212, 30845844, 35986818, 53980227, 71973636, 107960454, 215920908]

約数ペア:

[(1, 215920908), (2, 107960454), (3, 71973636), (4, 53980227), (6, 35986818), (7, 30845844), (9, 23991212), (12, 17993409), (14, 15422922), (18, 11995606), (21, 10281948), (28, 7711461), (36, 5997803), (42, 5140974), (63, 3427316), (84, 2570487), (126, 1713658), (252, 856829), (877, 246204), (977, 221004), (1754, 123102), (1954, 110502), (2631, 82068), (2931, 73668), (3508, 61551), (3908, 55251), (5262, 41034), (5862, 36834), (6139, 35172), (6839, 31572), (7893, 27356), (8793, 24556), (10524, 20517), (11724, 18417), (12278, 17586), (13678, 15786)]