21495180

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{839}}^1$

素因数の和:919

約数の個数: 96

約数和(自身を含む): 69995520

約数和(自身を除く): 48500340

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 61, 70, 84, 105, 122, 140, 183, 210, 244, 305, 366, 420, 427, 610, 732, 839, 854, 915, 1220, 1281, 1678, 1708, 1830, 2135, 2517, 2562, 3356, 3660, 4195, 4270, 5034, 5124, 5873, 6405, 8390, 8540, 10068, 11746, 12585, 12810, 16780, 17619, 23492, 25170, 25620, 29365, 35238, 50340, 51179, 58730, 70476, 88095, 102358, 117460, 153537, 176190, 204716, 255895, 307074, 352380, 358253, 511790, 614148, 716506, 767685, 1023580, 1074759, 1433012, 1535370, 1791265, 2149518, 3070740, 3582530, 4299036, 5373795, 7165060, 10747590, 21495180]

約数ペア:

[(1, 21495180), (2, 10747590), (3, 7165060), (4, 5373795), (5, 4299036), (6, 3582530), (7, 3070740), (10, 2149518), (12, 1791265), (14, 1535370), (15, 1433012), (20, 1074759), (21, 1023580), (28, 767685), (30, 716506), (35, 614148), (42, 511790), (60, 358253), (61, 352380), (70, 307074), (84, 255895), (105, 204716), (122, 176190), (140, 153537), (183, 117460), (210, 102358), (244, 88095), (305, 70476), (366, 58730), (420, 51179), (427, 50340), (610, 35238), (732, 29365), (839, 25620), (854, 25170), (915, 23492), (1220, 17619), (1281, 16780), (1678, 12810), (1708, 12585), (1830, 11746), (2135, 10068), (2517, 8540), (2562, 8390), (3356, 6405), (3660, 5873), (4195, 5124), (4270, 5034)]