81390100

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{3217}}^1$

素因数の和:3265

約数の個数: 72

約数和(自身を含む): 201112128

約数和(自身を除く): 119722028

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 44, 46, 50, 55, 92, 100, 110, 115, 220, 230, 253, 275, 460, 506, 550, 575, 1012, 1100, 1150, 1265, 2300, 2530, 3217, 5060, 6325, 6434, 12650, 12868, 16085, 25300, 32170, 35387, 64340, 70774, 73991, 80425, 141548, 147982, 160850, 176935, 295964, 321700, 353870, 369955, 707740, 739910, 813901, 884675, 1479820, 1627802, 1769350, 1849775, 3255604, 3538700, 3699550, 4069505, 7399100, 8139010, 16278020, 20347525, 40695050, 81390100]

約数ペア:

[(1, 81390100), (2, 40695050), (4, 20347525), (5, 16278020), (10, 8139010), (11, 7399100), (20, 4069505), (22, 3699550), (23, 3538700), (25, 3255604), (44, 1849775), (46, 1769350), (50, 1627802), (55, 1479820), (92, 884675), (100, 813901), (110, 739910), (115, 707740), (220, 369955), (230, 353870), (253, 321700), (275, 295964), (460, 176935), (506, 160850), (550, 147982), (575, 141548), (1012, 80425), (1100, 73991), (1150, 70774), (1265, 64340), (2300, 35387), (2530, 32170), (3217, 25300), (5060, 16085), (6325, 12868), (6434, 12650)]