16881825

素因数分解:

$3^1\times 5^2\times {\mathrm{31}}^1\times {\mathrm{53}}^1\times {\mathrm{137}}^1$

素因数の和:234

約数の個数: 48

約数和(自身を含む): 29569536

約数和(自身を除く): 12687711

約数列:

[1, 3, 5, 15, 25, 31, 53, 75, 93, 137, 155, 159, 265, 411, 465, 685, 775, 795, 1325, 1643, 2055, 2325, 3425, 3975, 4247, 4929, 7261, 8215, 10275, 12741, 21235, 21783, 24645, 36305, 41075, 63705, 106175, 108915, 123225, 181525, 225091, 318525, 544575, 675273, 1125455, 3376365, 5627275, 16881825]

約数ペア:

[(1, 16881825), (3, 5627275), (5, 3376365), (15, 1125455), (25, 675273), (31, 544575), (53, 318525), (75, 225091), (93, 181525), (137, 123225), (155, 108915), (159, 106175), (265, 63705), (411, 41075), (465, 36305), (685, 24645), (775, 21783), (795, 21235), (1325, 12741), (1643, 10275), (2055, 8215), (2325, 7261), (3425, 4929), (3975, 4247)]