21272030

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{41}}^1\times {\mathrm{307}}^1$

素因数の和:381

約数の個数: 48

約数和(自身を含む): 42611184

約数和(自身を除く): 21339154

約数列:

[1, 2, 5, 10, 13, 26, 41, 65, 82, 130, 169, 205, 307, 338, 410, 533, 614, 845, 1066, 1535, 1690, 2665, 3070, 3991, 5330, 6929, 7982, 12587, 13858, 19955, 25174, 34645, 39910, 51883, 62935, 69290, 103766, 125870, 163631, 259415, 327262, 518830, 818155, 1636310, 2127203, 4254406, 10636015, 21272030]

約数ペア:

[(1, 21272030), (2, 10636015), (5, 4254406), (10, 2127203), (13, 1636310), (26, 818155), (41, 518830), (65, 327262), (82, 259415), (130, 163631), (169, 125870), (205, 103766), (307, 69290), (338, 62935), (410, 51883), (533, 39910), (614, 34645), (845, 25174), (1066, 19955), (1535, 13858), (1690, 12587), (2665, 7982), (3070, 6929), (3991, 5330)]