21666996

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{691}}^1$

素因数の和:781

約数の個数: 72

約数和(自身を含む): 59949344

約数和(自身を除く): 38282348

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 67, 78, 117, 134, 156, 201, 234, 268, 402, 468, 603, 691, 804, 871, 1206, 1382, 1742, 2073, 2412, 2613, 2764, 3484, 4146, 5226, 6219, 7839, 8292, 8983, 10452, 12438, 15678, 17966, 24876, 26949, 31356, 35932, 46297, 53898, 80847, 92594, 107796, 138891, 161694, 185188, 277782, 323388, 416673, 555564, 601861, 833346, 1203722, 1666692, 1805583, 2407444, 3611166, 5416749, 7222332, 10833498, 21666996]

約数ペア:

[(1, 21666996), (2, 10833498), (3, 7222332), (4, 5416749), (6, 3611166), (9, 2407444), (12, 1805583), (13, 1666692), (18, 1203722), (26, 833346), (36, 601861), (39, 555564), (52, 416673), (67, 323388), (78, 277782), (117, 185188), (134, 161694), (156, 138891), (201, 107796), (234, 92594), (268, 80847), (402, 53898), (468, 46297), (603, 35932), (691, 31356), (804, 26949), (871, 24876), (1206, 17966), (1382, 15678), (1742, 12438), (2073, 10452), (2412, 8983), (2613, 8292), (2764, 7839), (3484, 6219), (4146, 5226)]