18543780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{1451}}^1$

素因数の和:1537

約数の個数: 72

約数和(自身を含む): 57081024

約数和(自身を除く): 38537244

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 71, 90, 142, 180, 213, 284, 355, 426, 639, 710, 852, 1065, 1278, 1420, 1451, 2130, 2556, 2902, 3195, 4260, 4353, 5804, 6390, 7255, 8706, 12780, 13059, 14510, 17412, 21765, 26118, 29020, 43530, 52236, 65295, 87060, 103021, 130590, 206042, 261180, 309063, 412084, 515105, 618126, 927189, 1030210, 1236252, 1545315, 1854378, 2060420, 3090630, 3708756, 4635945, 6181260, 9271890, 18543780]

約数ペア:

[(1, 18543780), (2, 9271890), (3, 6181260), (4, 4635945), (5, 3708756), (6, 3090630), (9, 2060420), (10, 1854378), (12, 1545315), (15, 1236252), (18, 1030210), (20, 927189), (30, 618126), (36, 515105), (45, 412084), (60, 309063), (71, 261180), (90, 206042), (142, 130590), (180, 103021), (213, 87060), (284, 65295), (355, 52236), (426, 43530), (639, 29020), (710, 26118), (852, 21765), (1065, 17412), (1278, 14510), (1420, 13059), (1451, 12780), (2130, 8706), (2556, 7255), (2902, 6390), (3195, 5804), (4260, 4353)]