21954790

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{1181}}^1$

素因数の和:1225

約数の個数: 48

約数和(自身を含む): 46722096

約数和(自身を除く): 24767306

約数列:

[1, 2, 5, 10, 11, 13, 22, 26, 55, 65, 110, 130, 143, 169, 286, 338, 715, 845, 1181, 1430, 1690, 1859, 2362, 3718, 5905, 9295, 11810, 12991, 15353, 18590, 25982, 30706, 64955, 76765, 129910, 153530, 168883, 199589, 337766, 399178, 844415, 997945, 1688830, 1995890, 2195479, 4390958, 10977395, 21954790]

約数ペア:

[(1, 21954790), (2, 10977395), (5, 4390958), (10, 2195479), (11, 1995890), (13, 1688830), (22, 997945), (26, 844415), (55, 399178), (65, 337766), (110, 199589), (130, 168883), (143, 153530), (169, 129910), (286, 76765), (338, 64955), (715, 30706), (845, 25982), (1181, 18590), (1430, 15353), (1690, 12991), (1859, 11810), (2362, 9295), (3718, 5905)]