19954900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{983}}^1$

素因数の和:1033

約数の個数: 72

約数和(自身を含む): 51246720

約数和(自身を除く): 31291820

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 29, 35, 50, 58, 70, 100, 116, 140, 145, 175, 203, 290, 350, 406, 580, 700, 725, 812, 983, 1015, 1450, 1966, 2030, 2900, 3932, 4060, 4915, 5075, 6881, 9830, 10150, 13762, 19660, 20300, 24575, 27524, 28507, 34405, 49150, 57014, 68810, 98300, 114028, 137620, 142535, 172025, 199549, 285070, 344050, 399098, 570140, 688100, 712675, 798196, 997745, 1425350, 1995490, 2850700, 3990980, 4988725, 9977450, 19954900]

約数ペア:

[(1, 19954900), (2, 9977450), (4, 4988725), (5, 3990980), (7, 2850700), (10, 1995490), (14, 1425350), (20, 997745), (25, 798196), (28, 712675), (29, 688100), (35, 570140), (50, 399098), (58, 344050), (70, 285070), (100, 199549), (116, 172025), (140, 142535), (145, 137620), (175, 114028), (203, 98300), (290, 68810), (350, 57014), (406, 49150), (580, 34405), (700, 28507), (725, 27524), (812, 24575), (983, 20300), (1015, 19660), (1450, 13762), (1966, 10150), (2030, 9830), (2900, 6881), (3932, 5075), (4060, 4915)]