215978980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{191}}^1\times {\mathrm{197}}^1$

素因数の和:445

約数の個数: 96

約数和(自身を含む): 536481792

約数和(自身を除く): 320502812

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 41, 70, 82, 140, 164, 191, 197, 205, 287, 382, 394, 410, 574, 764, 788, 820, 955, 985, 1148, 1337, 1379, 1435, 1910, 1970, 2674, 2758, 2870, 3820, 3940, 5348, 5516, 5740, 6685, 6895, 7831, 8077, 13370, 13790, 15662, 16154, 26740, 27580, 31324, 32308, 37627, 39155, 40385, 54817, 56539, 75254, 78310, 80770, 109634, 113078, 150508, 156620, 161540, 188135, 219268, 226156, 263389, 274085, 282695, 376270, 526778, 548170, 565390, 752540, 1053556, 1096340, 1130780, 1316945, 1542707, 2633890, 3085414, 5267780, 6170828, 7713535, 10798949, 15427070, 21597898, 30854140, 43195796, 53994745, 107989490, 215978980]

約数ペア:

[(1, 215978980), (2, 107989490), (4, 53994745), (5, 43195796), (7, 30854140), (10, 21597898), (14, 15427070), (20, 10798949), (28, 7713535), (35, 6170828), (41, 5267780), (70, 3085414), (82, 2633890), (140, 1542707), (164, 1316945), (191, 1130780), (197, 1096340), (205, 1053556), (287, 752540), (382, 565390), (394, 548170), (410, 526778), (574, 376270), (764, 282695), (788, 274085), (820, 263389), (955, 226156), (985, 219268), (1148, 188135), (1337, 161540), (1379, 156620), (1435, 150508), (1910, 113078), (1970, 109634), (2674, 80770), (2758, 78310), (2870, 75254), (3820, 56539), (3940, 54817), (5348, 40385), (5516, 39155), (5740, 37627), (6685, 32308), (6895, 31324), (7831, 27580), (8077, 26740), (13370, 16154), (13790, 15662)]