21138684

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{113}}^1\times {\mathrm{131}}^1$

素因数の和:275

約数の個数: 96

約数和(自身を含む): 60673536

約数和(自身を除く): 39534852

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 17, 21, 28, 34, 42, 51, 68, 84, 102, 113, 119, 131, 204, 226, 238, 262, 339, 357, 393, 452, 476, 524, 678, 714, 786, 791, 917, 1356, 1428, 1572, 1582, 1834, 1921, 2227, 2373, 2751, 3164, 3668, 3842, 4454, 4746, 5502, 5763, 6681, 7684, 8908, 9492, 11004, 11526, 13362, 13447, 14803, 15589, 23052, 26724, 26894, 29606, 31178, 40341, 44409, 46767, 53788, 59212, 62356, 80682, 88818, 93534, 103621, 161364, 177636, 187068, 207242, 251651, 310863, 414484, 503302, 621726, 754953, 1006604, 1243452, 1509906, 1761557, 3019812, 3523114, 5284671, 7046228, 10569342, 21138684]

約数ペア:

[(1, 21138684), (2, 10569342), (3, 7046228), (4, 5284671), (6, 3523114), (7, 3019812), (12, 1761557), (14, 1509906), (17, 1243452), (21, 1006604), (28, 754953), (34, 621726), (42, 503302), (51, 414484), (68, 310863), (84, 251651), (102, 207242), (113, 187068), (119, 177636), (131, 161364), (204, 103621), (226, 93534), (238, 88818), (262, 80682), (339, 62356), (357, 59212), (393, 53788), (452, 46767), (476, 44409), (524, 40341), (678, 31178), (714, 29606), (786, 26894), (791, 26724), (917, 23052), (1356, 15589), (1428, 14803), (1572, 13447), (1582, 13362), (1834, 11526), (1921, 11004), (2227, 9492), (2373, 8908), (2751, 7684), (3164, 6681), (3668, 5763), (3842, 5502), (4454, 4746)]