81761784

素因数分解:

$2^3\times 3^1\times {\mathrm{13}}^1\times {\mathrm{271}}^1\times {\mathrm{967}}^1$

素因数の和:1260

約数の個数: 64

約数和(自身を含む): 221168640

約数和(自身を除く): 139406856

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 24, 26, 39, 52, 78, 104, 156, 271, 312, 542, 813, 967, 1084, 1626, 1934, 2168, 2901, 3252, 3523, 3868, 5802, 6504, 7046, 7736, 10569, 11604, 12571, 14092, 21138, 23208, 25142, 28184, 37713, 42276, 50284, 75426, 84552, 100568, 150852, 262057, 301704, 524114, 786171, 1048228, 1572342, 2096456, 3144684, 3406741, 6289368, 6813482, 10220223, 13626964, 20440446, 27253928, 40880892, 81761784]

約数ペア:

[(1, 81761784), (2, 40880892), (3, 27253928), (4, 20440446), (6, 13626964), (8, 10220223), (12, 6813482), (13, 6289368), (24, 3406741), (26, 3144684), (39, 2096456), (52, 1572342), (78, 1048228), (104, 786171), (156, 524114), (271, 301704), (312, 262057), (542, 150852), (813, 100568), (967, 84552), (1084, 75426), (1626, 50284), (1934, 42276), (2168, 37713), (2901, 28184), (3252, 25142), (3523, 23208), (3868, 21138), (5802, 14092), (6504, 12571), (7046, 11604), (7736, 10569)]