205100100

素因数分解:

$2^2\times 3^4\times 5^2\times {\mathrm{25321}}^1$

素因数の和:25347

約数の個数: 90

約数和(自身を含む): 664879754

約数和(自身を除く): 459779654

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 27, 30, 36, 45, 50, 54, 60, 75, 81, 90, 100, 108, 135, 150, 162, 180, 225, 270, 300, 324, 405, 450, 540, 675, 810, 900, 1350, 1620, 2025, 2700, 4050, 8100, 25321, 50642, 75963, 101284, 126605, 151926, 227889, 253210, 303852, 379815, 455778, 506420, 633025, 683667, 759630, 911556, 1139445, 1266050, 1367334, 1519260, 1899075, 2051001, 2278890, 2532100, 2734668, 3418335, 3798150, 4102002, 4557780, 5697225, 6836670, 7596300, 8204004, 10255005, 11394450, 13673340, 17091675, 20510010, 22788900, 34183350, 41020020, 51275025, 68366700, 102550050, 205100100]

約数ペア:

[(1, 205100100), (2, 102550050), (3, 68366700), (4, 51275025), (5, 41020020), (6, 34183350), (9, 22788900), (10, 20510010), (12, 17091675), (15, 13673340), (18, 11394450), (20, 10255005), (25, 8204004), (27, 7596300), (30, 6836670), (36, 5697225), (45, 4557780), (50, 4102002), (54, 3798150), (60, 3418335), (75, 2734668), (81, 2532100), (90, 2278890), (100, 2051001), (108, 1899075), (135, 1519260), (150, 1367334), (162, 1266050), (180, 1139445), (225, 911556), (270, 759630), (300, 683667), (324, 633025), (405, 506420), (450, 455778), (540, 379815), (675, 303852), (810, 253210), (900, 227889), (1350, 151926), (1620, 126605), (2025, 101284), (2700, 75963), (4050, 50642), (8100, 25321)]