20354355

素因数分解:

$3^3\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{181}}^1$

素因数の和:226

約数の個数: 96

約数和(自身を含む): 44815680

約数和(自身を除く): 24461325

約数列:

[1, 3, 5, 7, 9, 15, 17, 21, 27, 35, 45, 49, 51, 63, 85, 105, 119, 135, 147, 153, 181, 189, 245, 255, 315, 357, 441, 459, 543, 595, 735, 765, 833, 905, 945, 1071, 1267, 1323, 1629, 1785, 2205, 2295, 2499, 2715, 3077, 3213, 3801, 4165, 4887, 5355, 6335, 6615, 7497, 8145, 8869, 9231, 11403, 12495, 15385, 16065, 19005, 21539, 22491, 24435, 26607, 27693, 34209, 37485, 44345, 46155, 57015, 64617, 79821, 83079, 107695, 112455, 133035, 138465, 150773, 171045, 193851, 239463, 323085, 399105, 415395, 452319, 581553, 753865, 969255, 1197315, 1356957, 2261595, 2907765, 4070871, 6784785, 20354355]

約数ペア:

[(1, 20354355), (3, 6784785), (5, 4070871), (7, 2907765), (9, 2261595), (15, 1356957), (17, 1197315), (21, 969255), (27, 753865), (35, 581553), (45, 452319), (49, 415395), (51, 399105), (63, 323085), (85, 239463), (105, 193851), (119, 171045), (135, 150773), (147, 138465), (153, 133035), (181, 112455), (189, 107695), (245, 83079), (255, 79821), (315, 64617), (357, 57015), (441, 46155), (459, 44345), (543, 37485), (595, 34209), (735, 27693), (765, 26607), (833, 24435), (905, 22491), (945, 21539), (1071, 19005), (1267, 16065), (1323, 15385), (1629, 12495), (1785, 11403), (2205, 9231), (2295, 8869), (2499, 8145), (2715, 7497), (3077, 6615), (3213, 6335), (3801, 5355), (4165, 4887)]