21494940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{67}}^1\times {\mathrm{5347}}^1$

素因数の和:5426

約数の個数: 48

約数和(自身を含む): 61095552

約数和(自身を除く): 39600612

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 67, 134, 201, 268, 335, 402, 670, 804, 1005, 1340, 2010, 4020, 5347, 10694, 16041, 21388, 26735, 32082, 53470, 64164, 80205, 106940, 160410, 320820, 358249, 716498, 1074747, 1432996, 1791245, 2149494, 3582490, 4298988, 5373735, 7164980, 10747470, 21494940]

約数ペア:

[(1, 21494940), (2, 10747470), (3, 7164980), (4, 5373735), (5, 4298988), (6, 3582490), (10, 2149494), (12, 1791245), (15, 1432996), (20, 1074747), (30, 716498), (60, 358249), (67, 320820), (134, 160410), (201, 106940), (268, 80205), (335, 64164), (402, 53470), (670, 32082), (804, 26735), (1005, 21388), (1340, 16041), (2010, 10694), (4020, 5347)]