81825228

素因数分解:

$2^2\times 3^4\times {\mathrm{71}}^1\times {\mathrm{3557}}^1$

素因数の和:3644

約数の個数: 60

約数和(自身を含む): 216981072

約数和(自身を除く): 135155844

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 71, 81, 108, 142, 162, 213, 284, 324, 426, 639, 852, 1278, 1917, 2556, 3557, 3834, 5751, 7114, 7668, 10671, 11502, 14228, 21342, 23004, 32013, 42684, 64026, 96039, 128052, 192078, 252547, 288117, 384156, 505094, 576234, 757641, 1010188, 1152468, 1515282, 2272923, 3030564, 4545846, 6818769, 9091692, 13637538, 20456307, 27275076, 40912614, 81825228]

約数ペア:

[(1, 81825228), (2, 40912614), (3, 27275076), (4, 20456307), (6, 13637538), (9, 9091692), (12, 6818769), (18, 4545846), (27, 3030564), (36, 2272923), (54, 1515282), (71, 1152468), (81, 1010188), (108, 757641), (142, 576234), (162, 505094), (213, 384156), (284, 288117), (324, 252547), (426, 192078), (639, 128052), (852, 96039), (1278, 64026), (1917, 42684), (2556, 32013), (3557, 23004), (3834, 21342), (5751, 14228), (7114, 11502), (7668, 10671)]