81512820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{151}}^1\times {\mathrm{2999}}^1$

素因数の和:3165

約数の個数: 72

約数和(自身を含む): 248976000

約数和(自身を除く): 167463180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 151, 180, 302, 453, 604, 755, 906, 1359, 1510, 1812, 2265, 2718, 2999, 3020, 4530, 5436, 5998, 6795, 8997, 9060, 11996, 13590, 14995, 17994, 26991, 27180, 29990, 35988, 44985, 53982, 59980, 89970, 107964, 134955, 179940, 269910, 452849, 539820, 905698, 1358547, 1811396, 2264245, 2717094, 4075641, 4528490, 5434188, 6792735, 8151282, 9056980, 13585470, 16302564, 20378205, 27170940, 40756410, 81512820]

約数ペア:

[(1, 81512820), (2, 40756410), (3, 27170940), (4, 20378205), (5, 16302564), (6, 13585470), (9, 9056980), (10, 8151282), (12, 6792735), (15, 5434188), (18, 4528490), (20, 4075641), (30, 2717094), (36, 2264245), (45, 1811396), (60, 1358547), (90, 905698), (151, 539820), (180, 452849), (302, 269910), (453, 179940), (604, 134955), (755, 107964), (906, 89970), (1359, 59980), (1510, 53982), (1812, 44985), (2265, 35988), (2718, 29990), (2999, 27180), (3020, 26991), (4530, 17994), (5436, 14995), (5998, 13590), (6795, 11996), (8997, 9060)]