28289940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{193}}^1\times {\mathrm{349}}^1$

素因数の和:561

約数の個数: 96

約数和(自身を含む): 91257600

約数和(自身を除く): 62967660

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 193, 210, 349, 386, 420, 579, 698, 772, 965, 1047, 1158, 1351, 1396, 1745, 1930, 2094, 2316, 2443, 2702, 2895, 3490, 3860, 4053, 4188, 4886, 5235, 5404, 5790, 6755, 6980, 7329, 8106, 9772, 10470, 11580, 12215, 13510, 14658, 16212, 20265, 20940, 24430, 27020, 29316, 36645, 40530, 48860, 67357, 73290, 81060, 134714, 146580, 202071, 269428, 336785, 404142, 471499, 673570, 808284, 942998, 1010355, 1347140, 1414497, 1885996, 2020710, 2357495, 2828994, 4041420, 4714990, 5657988, 7072485, 9429980, 14144970, 28289940]

約数ペア:

[(1, 28289940), (2, 14144970), (3, 9429980), (4, 7072485), (5, 5657988), (6, 4714990), (7, 4041420), (10, 2828994), (12, 2357495), (14, 2020710), (15, 1885996), (20, 1414497), (21, 1347140), (28, 1010355), (30, 942998), (35, 808284), (42, 673570), (60, 471499), (70, 404142), (84, 336785), (105, 269428), (140, 202071), (193, 146580), (210, 134714), (349, 81060), (386, 73290), (420, 67357), (579, 48860), (698, 40530), (772, 36645), (965, 29316), (1047, 27020), (1158, 24430), (1351, 20940), (1396, 20265), (1745, 16212), (1930, 14658), (2094, 13510), (2316, 12215), (2443, 11580), (2702, 10470), (2895, 9772), (3490, 8106), (3860, 7329), (4053, 6980), (4188, 6755), (4886, 5790), (5235, 5404)]