18889884

素因数分解:

$2^2\times 3^2\times {\mathrm{13}}^1\times {\mathrm{181}}^1\times {\mathrm{223}}^1$

素因数の和:427

約数の個数: 72

約数和(自身を含む): 51938432

約数和(自身を除く): 33048548

約数列:

[1, 2, 3, 4, 6, 9, 12, 13, 18, 26, 36, 39, 52, 78, 117, 156, 181, 223, 234, 362, 446, 468, 543, 669, 724, 892, 1086, 1338, 1629, 2007, 2172, 2353, 2676, 2899, 3258, 4014, 4706, 5798, 6516, 7059, 8028, 8697, 9412, 11596, 14118, 17394, 21177, 26091, 28236, 34788, 40363, 42354, 52182, 80726, 84708, 104364, 121089, 161452, 242178, 363267, 484356, 524719, 726534, 1049438, 1453068, 1574157, 2098876, 3148314, 4722471, 6296628, 9444942, 18889884]

約数ペア:

[(1, 18889884), (2, 9444942), (3, 6296628), (4, 4722471), (6, 3148314), (9, 2098876), (12, 1574157), (13, 1453068), (18, 1049438), (26, 726534), (36, 524719), (39, 484356), (52, 363267), (78, 242178), (117, 161452), (156, 121089), (181, 104364), (223, 84708), (234, 80726), (362, 52182), (446, 42354), (468, 40363), (543, 34788), (669, 28236), (724, 26091), (892, 21177), (1086, 17394), (1338, 14118), (1629, 11596), (2007, 9412), (2172, 8697), (2353, 8028), (2676, 7059), (2899, 6516), (3258, 5798), (4014, 4706)]