28511140

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{619}}^1$

素因数の和:689

約数の個数: 72

約数和(自身を含む): 71245440

約数和(自身を除く): 42734300

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 47, 49, 70, 94, 98, 140, 188, 196, 235, 245, 329, 470, 490, 619, 658, 940, 980, 1238, 1316, 1645, 2303, 2476, 3095, 3290, 4333, 4606, 6190, 6580, 8666, 9212, 11515, 12380, 17332, 21665, 23030, 29093, 30331, 43330, 46060, 58186, 60662, 86660, 116372, 121324, 145465, 151655, 203651, 290930, 303310, 407302, 581860, 606620, 814604, 1018255, 1425557, 2036510, 2851114, 4073020, 5702228, 7127785, 14255570, 28511140]

約数ペア:

[(1, 28511140), (2, 14255570), (4, 7127785), (5, 5702228), (7, 4073020), (10, 2851114), (14, 2036510), (20, 1425557), (28, 1018255), (35, 814604), (47, 606620), (49, 581860), (70, 407302), (94, 303310), (98, 290930), (140, 203651), (188, 151655), (196, 145465), (235, 121324), (245, 116372), (329, 86660), (470, 60662), (490, 58186), (619, 46060), (658, 43330), (940, 30331), (980, 29093), (1238, 23030), (1316, 21665), (1645, 17332), (2303, 12380), (2476, 11515), (3095, 9212), (3290, 8666), (4333, 6580), (4606, 6190)]