21018972

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2011}}^1$

素因数の和:2098

約数の個数: 48

約数和(自身を含む): 53631872

約数和(自身を除く): 32612900

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 67, 78, 134, 156, 201, 268, 402, 804, 871, 1742, 2011, 2613, 3484, 4022, 5226, 6033, 8044, 10452, 12066, 24132, 26143, 52286, 78429, 104572, 134737, 156858, 269474, 313716, 404211, 538948, 808422, 1616844, 1751581, 3503162, 5254743, 7006324, 10509486, 21018972]

約数ペア:

[(1, 21018972), (2, 10509486), (3, 7006324), (4, 5254743), (6, 3503162), (12, 1751581), (13, 1616844), (26, 808422), (39, 538948), (52, 404211), (67, 313716), (78, 269474), (134, 156858), (156, 134737), (201, 104572), (268, 78429), (402, 52286), (804, 26143), (871, 24132), (1742, 12066), (2011, 10452), (2613, 8044), (3484, 6033), (4022, 5226)]