20696780

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{3461}}^1$

素因数の和:3506

約数の個数: 48

約数和(自身を含む): 48855744

約数和(自身を除く): 28158964

約数列:

[1, 2, 4, 5, 10, 13, 20, 23, 26, 46, 52, 65, 92, 115, 130, 230, 260, 299, 460, 598, 1196, 1495, 2990, 3461, 5980, 6922, 13844, 17305, 34610, 44993, 69220, 79603, 89986, 159206, 179972, 224965, 318412, 398015, 449930, 796030, 899860, 1034839, 1592060, 2069678, 4139356, 5174195, 10348390, 20696780]

約数ペア:

[(1, 20696780), (2, 10348390), (4, 5174195), (5, 4139356), (10, 2069678), (13, 1592060), (20, 1034839), (23, 899860), (26, 796030), (46, 449930), (52, 398015), (65, 318412), (92, 224965), (115, 179972), (130, 159206), (230, 89986), (260, 79603), (299, 69220), (460, 44993), (598, 34610), (1196, 17305), (1495, 13844), (2990, 6922), (3461, 5980)]