205978920

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{379}}^1\times {\mathrm{647}}^1$

素因数の和:1047

約数の個数: 128

約数和(自身を含む): 709171200

約数和(自身を除く): 503192280

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 28, 30, 35, 40, 42, 56, 60, 70, 84, 105, 120, 140, 168, 210, 280, 379, 420, 647, 758, 840, 1137, 1294, 1516, 1895, 1941, 2274, 2588, 2653, 3032, 3235, 3790, 3882, 4529, 4548, 5176, 5306, 5685, 6470, 7580, 7764, 7959, 9058, 9096, 9705, 10612, 11370, 12940, 13265, 13587, 15160, 15528, 15918, 18116, 19410, 21224, 22645, 22740, 25880, 26530, 27174, 31836, 36232, 38820, 39795, 45290, 45480, 53060, 54348, 63672, 67935, 77640, 79590, 90580, 106120, 108696, 135870, 159180, 181160, 245213, 271740, 318360, 490426, 543480, 735639, 980852, 1226065, 1471278, 1716491, 1961704, 2452130, 2942556, 3432982, 3678195, 4904260, 5149473, 5885112, 6865964, 7356390, 8582455, 9808520, 10298946, 13731928, 14712780, 17164910, 20597892, 25747365, 29425560, 34329820, 41195784, 51494730, 68659640, 102989460, 205978920]

約数ペア:

[(1, 205978920), (2, 102989460), (3, 68659640), (4, 51494730), (5, 41195784), (6, 34329820), (7, 29425560), (8, 25747365), (10, 20597892), (12, 17164910), (14, 14712780), (15, 13731928), (20, 10298946), (21, 9808520), (24, 8582455), (28, 7356390), (30, 6865964), (35, 5885112), (40, 5149473), (42, 4904260), (56, 3678195), (60, 3432982), (70, 2942556), (84, 2452130), (105, 1961704), (120, 1716491), (140, 1471278), (168, 1226065), (210, 980852), (280, 735639), (379, 543480), (420, 490426), (647, 318360), (758, 271740), (840, 245213), (1137, 181160), (1294, 159180), (1516, 135870), (1895, 108696), (1941, 106120), (2274, 90580), (2588, 79590), (2653, 77640), (3032, 67935), (3235, 63672), (3790, 54348), (3882, 53060), (4529, 45480), (4548, 45290), (5176, 39795), (5306, 38820), (5685, 36232), (6470, 31836), (7580, 27174), (7764, 26530), (7959, 25880), (9058, 22740), (9096, 22645), (9705, 21224), (10612, 19410), (11370, 18116), (12940, 15918), (13265, 15528), (13587, 15160)]