20218573900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{285977}}^1$

素因数の和:286099

約数の個数: 72

約数和(自身を含む): 50638696416

約数和(自身を除く): 30420122516

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 101, 140, 175, 202, 350, 404, 505, 700, 707, 1010, 1414, 2020, 2525, 2828, 3535, 5050, 7070, 10100, 14140, 17675, 35350, 70700, 285977, 571954, 1143908, 1429885, 2001839, 2859770, 4003678, 5719540, 7149425, 8007356, 10009195, 14298850, 20018390, 28597700, 28883677, 40036780, 50045975, 57767354, 100091950, 115534708, 144418385, 200183900, 202185739, 288836770, 404371478, 577673540, 722091925, 808742956, 1010928695, 1444183850, 2021857390, 2888367700, 4043714780, 5054643475, 10109286950, 20218573900]

約数ペア:

[(1, 20218573900), (2, 10109286950), (4, 5054643475), (5, 4043714780), (7, 2888367700), (10, 2021857390), (14, 1444183850), (20, 1010928695), (25, 808742956), (28, 722091925), (35, 577673540), (50, 404371478), (70, 288836770), (100, 202185739), (101, 200183900), (140, 144418385), (175, 115534708), (202, 100091950), (350, 57767354), (404, 50045975), (505, 40036780), (700, 28883677), (707, 28597700), (1010, 20018390), (1414, 14298850), (2020, 10009195), (2525, 8007356), (2828, 7149425), (3535, 5719540), (5050, 4003678), (7070, 2859770), (10100, 2001839), (14140, 1429885), (17675, 1143908), (35350, 571954), (70700, 285977)]