20808515475

素因数分解:

$3^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{442499}}^1$

素因数の和:442545

約数の個数: 72

約数和(自身を含む): 42798600000

約数和(自身を除く): 21990084525

約数列:

[1, 3, 5, 9, 11, 15, 19, 25, 33, 45, 55, 57, 75, 95, 99, 165, 171, 209, 225, 275, 285, 475, 495, 627, 825, 855, 1045, 1425, 1881, 2475, 3135, 4275, 5225, 9405, 15675, 47025, 442499, 1327497, 2212495, 3982491, 4867489, 6637485, 8407481, 11062475, 14602467, 19912455, 24337445, 25222443, 33187425, 42037405, 43807401, 73012335, 75667329, 92482291, 99562275, 121687225, 126112215, 210187025, 219037005, 277446873, 365061675, 378336645, 462411455, 630561075, 832340619, 1095185025, 1387234365, 1891683225, 2312057275, 4161703095, 6936171825, 20808515475]

約数ペア:

[(1, 20808515475), (3, 6936171825), (5, 4161703095), (9, 2312057275), (11, 1891683225), (15, 1387234365), (19, 1095185025), (25, 832340619), (33, 630561075), (45, 462411455), (55, 378336645), (57, 365061675), (75, 277446873), (95, 219037005), (99, 210187025), (165, 126112215), (171, 121687225), (209, 99562275), (225, 92482291), (275, 75667329), (285, 73012335), (475, 43807401), (495, 42037405), (627, 33187425), (825, 25222443), (855, 24337445), (1045, 19912455), (1425, 14602467), (1881, 11062475), (2475, 8407481), (3135, 6637485), (4275, 4867489), (5225, 3982491), (9405, 2212495), (15675, 1327497), (47025, 442499)]