201390980

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{89}}^1\times {\mathrm{2309}}^1$

素因数の和:2421

約数の個数: 72

約数和(自身を含む): 497712600

約数和(自身を除く): 296321620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 89, 98, 140, 178, 196, 245, 356, 445, 490, 623, 890, 980, 1246, 1780, 2309, 2492, 3115, 4361, 4618, 6230, 8722, 9236, 11545, 12460, 16163, 17444, 21805, 23090, 32326, 43610, 46180, 64652, 80815, 87220, 113141, 161630, 205501, 226282, 323260, 411002, 452564, 565705, 822004, 1027505, 1131410, 1438507, 2055010, 2262820, 2877014, 4110020, 5754028, 7192535, 10069549, 14385070, 20139098, 28770140, 40278196, 50347745, 100695490, 201390980]

約数ペア:

[(1, 201390980), (2, 100695490), (4, 50347745), (5, 40278196), (7, 28770140), (10, 20139098), (14, 14385070), (20, 10069549), (28, 7192535), (35, 5754028), (49, 4110020), (70, 2877014), (89, 2262820), (98, 2055010), (140, 1438507), (178, 1131410), (196, 1027505), (245, 822004), (356, 565705), (445, 452564), (490, 411002), (623, 323260), (890, 226282), (980, 205501), (1246, 161630), (1780, 113141), (2309, 87220), (2492, 80815), (3115, 64652), (4361, 46180), (4618, 43610), (6230, 32326), (8722, 23090), (9236, 21805), (11545, 17444), (12460, 16163)]