66176840

素因数分解:

$2^3\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{641}}^1$

素因数の和:770

約数の個数: 64

約数和(自身を含む): 156006000

約数和(自身を除く): 89829160

約数列:

[1, 2, 4, 5, 8, 10, 20, 29, 40, 58, 89, 116, 145, 178, 232, 290, 356, 445, 580, 641, 712, 890, 1160, 1282, 1780, 2564, 2581, 3205, 3560, 5128, 5162, 6410, 10324, 12820, 12905, 18589, 20648, 25640, 25810, 37178, 51620, 57049, 74356, 92945, 103240, 114098, 148712, 185890, 228196, 285245, 371780, 456392, 570490, 743560, 1140980, 1654421, 2281960, 3308842, 6617684, 8272105, 13235368, 16544210, 33088420, 66176840]

約数ペア:

[(1, 66176840), (2, 33088420), (4, 16544210), (5, 13235368), (8, 8272105), (10, 6617684), (20, 3308842), (29, 2281960), (40, 1654421), (58, 1140980), (89, 743560), (116, 570490), (145, 456392), (178, 371780), (232, 285245), (290, 228196), (356, 185890), (445, 148712), (580, 114098), (641, 103240), (712, 92945), (890, 74356), (1160, 57049), (1282, 51620), (1780, 37178), (2564, 25810), (2581, 25640), (3205, 20648), (3560, 18589), (5128, 12905), (5162, 12820), (6410, 10324)]