18262100

素因数分解:

$2^2\times 5^2\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:225

約数の個数: 72

約数和(自身を含む): 42163968

約数和(自身を除く): 23901868

約数列:

[1, 2, 4, 5, 10, 20, 25, 31, 43, 50, 62, 86, 100, 124, 137, 155, 172, 215, 274, 310, 430, 548, 620, 685, 775, 860, 1075, 1333, 1370, 1550, 2150, 2666, 2740, 3100, 3425, 4247, 4300, 5332, 5891, 6665, 6850, 8494, 11782, 13330, 13700, 16988, 21235, 23564, 26660, 29455, 33325, 42470, 58910, 66650, 84940, 106175, 117820, 133300, 147275, 182621, 212350, 294550, 365242, 424700, 589100, 730484, 913105, 1826210, 3652420, 4565525, 9131050, 18262100]

約数ペア:

[(1, 18262100), (2, 9131050), (4, 4565525), (5, 3652420), (10, 1826210), (20, 913105), (25, 730484), (31, 589100), (43, 424700), (50, 365242), (62, 294550), (86, 212350), (100, 182621), (124, 147275), (137, 133300), (155, 117820), (172, 106175), (215, 84940), (274, 66650), (310, 58910), (430, 42470), (548, 33325), (620, 29455), (685, 26660), (775, 23564), (860, 21235), (1075, 16988), (1333, 13700), (1370, 13330), (1550, 11782), (2150, 8494), (2666, 6850), (2740, 6665), (3100, 5891), (3425, 5332), (4247, 4300)]