28724900

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{277}}^1$

素因数の和:369

約数の個数: 72

約数和(自身を含む): 67323816

約数和(自身を除く): 38598916

約数列:

[1, 2, 4, 5, 10, 17, 20, 25, 34, 50, 61, 68, 85, 100, 122, 170, 244, 277, 305, 340, 425, 554, 610, 850, 1037, 1108, 1220, 1385, 1525, 1700, 2074, 2770, 3050, 4148, 4709, 5185, 5540, 6100, 6925, 9418, 10370, 13850, 16897, 18836, 20740, 23545, 25925, 27700, 33794, 47090, 51850, 67588, 84485, 94180, 103700, 117725, 168970, 235450, 287249, 337940, 422425, 470900, 574498, 844850, 1148996, 1436245, 1689700, 2872490, 5744980, 7181225, 14362450, 28724900]

約数ペア:

[(1, 28724900), (2, 14362450), (4, 7181225), (5, 5744980), (10, 2872490), (17, 1689700), (20, 1436245), (25, 1148996), (34, 844850), (50, 574498), (61, 470900), (68, 422425), (85, 337940), (100, 287249), (122, 235450), (170, 168970), (244, 117725), (277, 103700), (305, 94180), (340, 84485), (425, 67588), (554, 51850), (610, 47090), (850, 33794), (1037, 27700), (1108, 25925), (1220, 23545), (1385, 20740), (1525, 18836), (1700, 16897), (2074, 13850), (2770, 10370), (3050, 9418), (4148, 6925), (4709, 6100), (5185, 5540)]