209938831325

素因数分解:

$5^2\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{53}}^2\times {\mathrm{6841}}^1$

素因数の和:6999

約数の個数: 72

約数和(自身を含む): 291479052480

約数和(自身を除く): 81540221155

約数列:

[1, 5, 19, 23, 25, 53, 95, 115, 265, 437, 475, 575, 1007, 1219, 1325, 2185, 2809, 5035, 6095, 6841, 10925, 14045, 23161, 25175, 30475, 34205, 53371, 64607, 70225, 115805, 129979, 157343, 171025, 266855, 323035, 362573, 579025, 649895, 786715, 1227533, 1334275, 1615175, 1812865, 2989517, 3249475, 3933575, 6137665, 6888887, 8339179, 9064325, 14947585, 19216369, 30688325, 34444435, 41695895, 74737925, 96081845, 158444401, 172222175, 208479475, 365111011, 441976487, 480409225, 792222005, 1825555055, 2209882435, 3961110025, 8397553253, 9127775275, 11049412175, 41987766265, 209938831325]

約数ペア:

[(1, 209938831325), (5, 41987766265), (19, 11049412175), (23, 9127775275), (25, 8397553253), (53, 3961110025), (95, 2209882435), (115, 1825555055), (265, 792222005), (437, 480409225), (475, 441976487), (575, 365111011), (1007, 208479475), (1219, 172222175), (1325, 158444401), (2185, 96081845), (2809, 74737925), (5035, 41695895), (6095, 34444435), (6841, 30688325), (10925, 19216369), (14045, 14947585), (23161, 9064325), (25175, 8339179), (30475, 6888887), (34205, 6137665), (53371, 3933575), (64607, 3249475), (70225, 2989517), (115805, 1812865), (129979, 1615175), (157343, 1334275), (171025, 1227533), (266855, 786715), (323035, 649895), (362573, 579025)]