81390764

素因数分解:

$2^2\times 7^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1879}}^1$

素因数の和:1927

約数の個数: 72

約数和(自身を含む): 189030240

約数和(自身を除く): 107639476

約数列:

[1, 2, 4, 7, 13, 14, 17, 26, 28, 34, 49, 52, 68, 91, 98, 119, 182, 196, 221, 238, 364, 442, 476, 637, 833, 884, 1274, 1547, 1666, 1879, 2548, 3094, 3332, 3758, 6188, 7516, 10829, 13153, 21658, 24427, 26306, 31943, 43316, 48854, 52612, 63886, 92071, 97708, 127772, 170989, 184142, 223601, 341978, 368284, 415259, 447202, 683956, 830518, 894404, 1196923, 1565207, 1661036, 2393846, 2906813, 3130414, 4787692, 5813626, 6260828, 11627252, 20347691, 40695382, 81390764]

約数ペア:

[(1, 81390764), (2, 40695382), (4, 20347691), (7, 11627252), (13, 6260828), (14, 5813626), (17, 4787692), (26, 3130414), (28, 2906813), (34, 2393846), (49, 1661036), (52, 1565207), (68, 1196923), (91, 894404), (98, 830518), (119, 683956), (182, 447202), (196, 415259), (221, 368284), (238, 341978), (364, 223601), (442, 184142), (476, 170989), (637, 127772), (833, 97708), (884, 92071), (1274, 63886), (1547, 52612), (1666, 48854), (1879, 43316), (2548, 31943), (3094, 26306), (3332, 24427), (3758, 21658), (6188, 13153), (7516, 10829)]