21804825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{1013}}^1$

素因数の和:1074

約数の個数: 48

約数和(自身を含む): 42247296

約数和(自身を除く): 20442471

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 41, 75, 105, 123, 175, 205, 287, 525, 615, 861, 1013, 1025, 1435, 3039, 3075, 4305, 5065, 7091, 7175, 15195, 21273, 21525, 25325, 35455, 41533, 75975, 106365, 124599, 177275, 207665, 290731, 531825, 622995, 872193, 1038325, 1453655, 3114975, 4360965, 7268275, 21804825]

約数ペア:

[(1, 21804825), (3, 7268275), (5, 4360965), (7, 3114975), (15, 1453655), (21, 1038325), (25, 872193), (35, 622995), (41, 531825), (75, 290731), (105, 207665), (123, 177275), (175, 124599), (205, 106365), (287, 75975), (525, 41533), (615, 35455), (861, 25325), (1013, 21525), (1025, 21273), (1435, 15195), (3039, 7175), (3075, 7091), (4305, 5065)]