61302020

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{137}}^1\times {\mathrm{1721}}^1$

素因数の和:1880

約数の個数: 48

約数和(自身を含む): 139729968

約数和(自身を除く): 78427948

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 137, 260, 274, 548, 685, 1370, 1721, 1781, 2740, 3442, 3562, 6884, 7124, 8605, 8905, 17210, 17810, 22373, 34420, 35620, 44746, 89492, 111865, 223730, 235777, 447460, 471554, 943108, 1178885, 2357770, 3065101, 4715540, 6130202, 12260404, 15325505, 30651010, 61302020]

約数ペア:

[(1, 61302020), (2, 30651010), (4, 15325505), (5, 12260404), (10, 6130202), (13, 4715540), (20, 3065101), (26, 2357770), (52, 1178885), (65, 943108), (130, 471554), (137, 447460), (260, 235777), (274, 223730), (548, 111865), (685, 89492), (1370, 44746), (1721, 35620), (1781, 34420), (2740, 22373), (3442, 17810), (3562, 17210), (6884, 8905), (7124, 8605)]