31286900

素因数分解:

$2^2\times 5^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:321

約数の個数: 72

約数和(自身を含む): 72328704

約数和(自身を除く): 41041804

約数列:

[1, 2, 4, 5, 10, 20, 23, 25, 46, 50, 61, 92, 100, 115, 122, 223, 230, 244, 305, 446, 460, 575, 610, 892, 1115, 1150, 1220, 1403, 1525, 2230, 2300, 2806, 3050, 4460, 5129, 5575, 5612, 6100, 7015, 10258, 11150, 13603, 14030, 20516, 22300, 25645, 27206, 28060, 35075, 51290, 54412, 68015, 70150, 102580, 128225, 136030, 140300, 256450, 272060, 312869, 340075, 512900, 625738, 680150, 1251476, 1360300, 1564345, 3128690, 6257380, 7821725, 15643450, 31286900]

約数ペア:

[(1, 31286900), (2, 15643450), (4, 7821725), (5, 6257380), (10, 3128690), (20, 1564345), (23, 1360300), (25, 1251476), (46, 680150), (50, 625738), (61, 512900), (92, 340075), (100, 312869), (115, 272060), (122, 256450), (223, 140300), (230, 136030), (244, 128225), (305, 102580), (446, 70150), (460, 68015), (575, 54412), (610, 51290), (892, 35075), (1115, 28060), (1150, 27206), (1220, 25645), (1403, 22300), (1525, 20516), (2230, 14030), (2300, 13603), (2806, 11150), (3050, 10258), (4460, 7015), (5129, 6100), (5575, 5612)]