28939120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{1667}}^1$

素因数の和:1718

約数の個数: 80

約数和(自身を含む): 79423488

約数和(自身を除く): 50484368

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1667, 1736, 2170, 2480, 3334, 3472, 4340, 6668, 8335, 8680, 11669, 13336, 16670, 17360, 23338, 26672, 33340, 46676, 51677, 58345, 66680, 93352, 103354, 116690, 133360, 186704, 206708, 233380, 258385, 361739, 413416, 466760, 516770, 723478, 826832, 933520, 1033540, 1446956, 1808695, 2067080, 2893912, 3617390, 4134160, 5787824, 7234780, 14469560, 28939120]

約数ペア:

[(1, 28939120), (2, 14469560), (4, 7234780), (5, 5787824), (7, 4134160), (8, 3617390), (10, 2893912), (14, 2067080), (16, 1808695), (20, 1446956), (28, 1033540), (31, 933520), (35, 826832), (40, 723478), (56, 516770), (62, 466760), (70, 413416), (80, 361739), (112, 258385), (124, 233380), (140, 206708), (155, 186704), (217, 133360), (248, 116690), (280, 103354), (310, 93352), (434, 66680), (496, 58345), (560, 51677), (620, 46676), (868, 33340), (1085, 26672), (1240, 23338), (1667, 17360), (1736, 16670), (2170, 13336), (2480, 11669), (3334, 8680), (3472, 8335), (4340, 6668)]