1991569465

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1\times {\mathrm{6421}}^1$

素因数の和:6573

約数の個数: 32

約数和(自身を含む): 2621717280

約数和(自身を除く): 630147815

約数列:

[1, 5, 17, 41, 85, 89, 205, 445, 697, 1513, 3485, 3649, 6421, 7565, 18245, 32105, 62033, 109157, 263261, 310165, 545785, 571469, 1316305, 2857345, 4475437, 9714973, 22377185, 23430229, 48574865, 117151145, 398313893, 1991569465]

約数ペア:

[(1, 1991569465), (5, 398313893), (17, 117151145), (41, 48574865), (85, 23430229), (89, 22377185), (205, 9714973), (445, 4475437), (697, 2857345), (1513, 1316305), (3485, 571469), (3649, 545785), (6421, 310165), (7565, 263261), (18245, 109157), (32105, 62033)]