72428415

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{439}}^1\times {\mathrm{647}}^1$

素因数の和:1111

約数の個数: 32

約数和(自身を含む): 123171840

約数和(自身を除く): 50743425

約数列:

[1, 3, 5, 15, 17, 51, 85, 255, 439, 647, 1317, 1941, 2195, 3235, 6585, 7463, 9705, 10999, 22389, 32997, 37315, 54995, 111945, 164985, 284033, 852099, 1420165, 4260495, 4828561, 14485683, 24142805, 72428415]

約数ペア:

[(1, 72428415), (3, 24142805), (5, 14485683), (15, 4828561), (17, 4260495), (51, 1420165), (85, 852099), (255, 284033), (439, 164985), (647, 111945), (1317, 54995), (1941, 37315), (2195, 32997), (3235, 22389), (6585, 10999), (7463, 9705)]