221649260

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{647}}^1\times {\mathrm{2447}}^1$

素因数の和:3110

約数の個数: 48

約数和(自身を含む): 532998144

約数和(自身を除く): 311348884

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 647, 1294, 2447, 2588, 3235, 4529, 4894, 6470, 9058, 9788, 12235, 12940, 17129, 18116, 22645, 24470, 34258, 45290, 48940, 68516, 85645, 90580, 171290, 342580, 1583209, 3166418, 6332836, 7916045, 11082463, 15832090, 22164926, 31664180, 44329852, 55412315, 110824630, 221649260]

約数ペア:

[(1, 221649260), (2, 110824630), (4, 55412315), (5, 44329852), (7, 31664180), (10, 22164926), (14, 15832090), (20, 11082463), (28, 7916045), (35, 6332836), (70, 3166418), (140, 1583209), (647, 342580), (1294, 171290), (2447, 90580), (2588, 85645), (3235, 68516), (4529, 48940), (4894, 45290), (6470, 34258), (9058, 24470), (9788, 22645), (12235, 18116), (12940, 17129)]