20291217388

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{1259}}^1\times {\mathrm{5081}}^1$

素因数の和:6418

約数の個数: 48

約数和(自身を含む): 38906572320

約数和(自身を除く): 18615354932

約数列:

[1, 2, 4, 13, 26, 52, 61, 122, 244, 793, 1259, 1586, 2518, 3172, 5036, 5081, 10162, 16367, 20324, 32734, 65468, 66053, 76799, 132106, 153598, 264212, 307196, 309941, 619882, 998387, 1239764, 1996774, 3993548, 4029233, 6396979, 8058466, 12793958, 16116932, 25587916, 83160727, 166321454, 332642908, 390215719, 780431438, 1560862876, 5072804347, 10145608694, 20291217388]

約数ペア:

[(1, 20291217388), (2, 10145608694), (4, 5072804347), (13, 1560862876), (26, 780431438), (52, 390215719), (61, 332642908), (122, 166321454), (244, 83160727), (793, 25587916), (1259, 16116932), (1586, 12793958), (2518, 8058466), (3172, 6396979), (5036, 4029233), (5081, 3993548), (10162, 1996774), (16367, 1239764), (20324, 998387), (32734, 619882), (65468, 309941), (66053, 307196), (76799, 264212), (132106, 153598)]