668820100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{127}}^1\times {\mathrm{4051}}^1$

素因数の和:4205

約数の個数: 72

約数和(自身を含む): 1575676928

約数和(自身を除く): 906856828

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 127, 130, 254, 260, 325, 508, 635, 650, 1270, 1300, 1651, 2540, 3175, 3302, 4051, 6350, 6604, 8102, 8255, 12700, 16204, 16510, 20255, 33020, 40510, 41275, 52663, 81020, 82550, 101275, 105326, 165100, 202550, 210652, 263315, 405100, 514477, 526630, 1028954, 1053260, 1316575, 2057908, 2572385, 2633150, 5144770, 5266300, 6688201, 10289540, 12861925, 13376402, 25723850, 26752804, 33441005, 51447700, 66882010, 133764020, 167205025, 334410050, 668820100]

約数ペア:

[(1, 668820100), (2, 334410050), (4, 167205025), (5, 133764020), (10, 66882010), (13, 51447700), (20, 33441005), (25, 26752804), (26, 25723850), (50, 13376402), (52, 12861925), (65, 10289540), (100, 6688201), (127, 5266300), (130, 5144770), (254, 2633150), (260, 2572385), (325, 2057908), (508, 1316575), (635, 1053260), (650, 1028954), (1270, 526630), (1300, 514477), (1651, 405100), (2540, 263315), (3175, 210652), (3302, 202550), (4051, 165100), (6350, 105326), (6604, 101275), (8102, 82550), (8255, 81020), (12700, 52663), (16204, 41275), (16510, 40510), (20255, 33020)]