21996260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{7691}}^1$

素因数の和:7724

約数の個数: 48

約数和(自身を含む): 54274752

約数和(自身を除く): 32278492

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 7691, 15382, 30764, 38455, 76910, 84601, 99983, 153820, 169202, 199966, 338404, 399932, 423005, 499915, 846010, 999830, 1099813, 1692020, 1999660, 2199626, 4399252, 5499065, 10998130, 21996260]

約数ペア:

[(1, 21996260), (2, 10998130), (4, 5499065), (5, 4399252), (10, 2199626), (11, 1999660), (13, 1692020), (20, 1099813), (22, 999830), (26, 846010), (44, 499915), (52, 423005), (55, 399932), (65, 338404), (110, 199966), (130, 169202), (143, 153820), (220, 99983), (260, 84601), (286, 76910), (572, 38455), (715, 30764), (1430, 15382), (2860, 7691)]