21231252

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{487}}^1$

素因数の和:677

約数の個数: 72

約数和(自身を含む): 61815936

約数和(自身を除く): 40584684

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 173, 252, 346, 487, 519, 692, 974, 1038, 1211, 1461, 1557, 1948, 2076, 2422, 2922, 3114, 3409, 3633, 4383, 4844, 5844, 6228, 6818, 7266, 8766, 10227, 10899, 13636, 14532, 17532, 20454, 21798, 30681, 40908, 43596, 61362, 84251, 122724, 168502, 252753, 337004, 505506, 589757, 758259, 1011012, 1179514, 1516518, 1769271, 2359028, 3033036, 3538542, 5307813, 7077084, 10615626, 21231252]

約数ペア:

[(1, 21231252), (2, 10615626), (3, 7077084), (4, 5307813), (6, 3538542), (7, 3033036), (9, 2359028), (12, 1769271), (14, 1516518), (18, 1179514), (21, 1011012), (28, 758259), (36, 589757), (42, 505506), (63, 337004), (84, 252753), (126, 168502), (173, 122724), (252, 84251), (346, 61362), (487, 43596), (519, 40908), (692, 30681), (974, 21798), (1038, 20454), (1211, 17532), (1461, 14532), (1557, 13636), (1948, 10899), (2076, 10227), (2422, 8766), (2922, 7266), (3114, 6818), (3409, 6228), (3633, 5844), (4383, 4844)]