31504220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{1609}}^1$

素因数の和:1718

約数の個数: 48

約数和(自身を含む): 73029600

約数和(自身を除く): 41525380

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 979, 1609, 1780, 1958, 3218, 3916, 4895, 6436, 8045, 9790, 16090, 17699, 19580, 32180, 35398, 70796, 88495, 143201, 176990, 286402, 353980, 572804, 716005, 1432010, 1575211, 2864020, 3150422, 6300844, 7876055, 15752110, 31504220]

約数ペア:

[(1, 31504220), (2, 15752110), (4, 7876055), (5, 6300844), (10, 3150422), (11, 2864020), (20, 1575211), (22, 1432010), (44, 716005), (55, 572804), (89, 353980), (110, 286402), (178, 176990), (220, 143201), (356, 88495), (445, 70796), (890, 35398), (979, 32180), (1609, 19580), (1780, 17699), (1958, 16090), (3218, 9790), (3916, 8045), (4895, 6436)]