18887409918

素因数分解:

$2^1\times 3^2\times {\mathrm{13}}^2\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{557}}^1$

素因数の和:819

約数の個数: 144

約数和(自身を含む): 45304305696

約数和(自身を除く): 26416895778

約数列:

[1, 2, 3, 6, 9, 13, 18, 26, 39, 71, 78, 117, 142, 157, 169, 213, 234, 314, 338, 426, 471, 507, 557, 639, 923, 942, 1014, 1114, 1278, 1413, 1521, 1671, 1846, 2041, 2769, 2826, 3042, 3342, 4082, 5013, 5538, 6123, 7241, 8307, 10026, 11147, 11999, 12246, 14482, 16614, 18369, 21723, 22294, 23998, 26533, 33441, 35997, 36738, 39547, 43446, 53066, 65169, 66882, 71994, 79094, 79599, 87449, 94133, 100323, 107991, 118641, 130338, 144911, 159198, 174898, 188266, 200646, 215982, 237282, 238797, 262347, 282399, 289822, 355923, 434733, 477594, 514111, 524694, 564798, 711846, 787041, 847197, 869466, 1028222, 1136837, 1304199, 1542333, 1574082, 1694394, 1883843, 2273674, 2608398, 3084666, 3410511, 3767686, 4626999, 5651529, 6208879, 6683443, 6821022, 9253998, 10231533, 11303058, 12417758, 13366886, 14778881, 16954587, 18626637, 20050329, 20463066, 29557762, 33909174, 37253274, 40100658, 44336643, 55879911, 60150987, 80715427, 88673286, 111759822, 120301974, 133009929, 161430854, 242146281, 266019858, 484292562, 726438843, 1049300551, 1452877686, 2098601102, 3147901653, 6295803306, 9443704959, 18887409918]

約数ペア:

[(1, 18887409918), (2, 9443704959), (3, 6295803306), (6, 3147901653), (9, 2098601102), (13, 1452877686), (18, 1049300551), (26, 726438843), (39, 484292562), (71, 266019858), (78, 242146281), (117, 161430854), (142, 133009929), (157, 120301974), (169, 111759822), (213, 88673286), (234, 80715427), (314, 60150987), (338, 55879911), (426, 44336643), (471, 40100658), (507, 37253274), (557, 33909174), (639, 29557762), (923, 20463066), (942, 20050329), (1014, 18626637), (1114, 16954587), (1278, 14778881), (1413, 13366886), (1521, 12417758), (1671, 11303058), (1846, 10231533), (2041, 9253998), (2769, 6821022), (2826, 6683443), (3042, 6208879), (3342, 5651529), (4082, 4626999), (5013, 3767686), (5538, 3410511), (6123, 3084666), (7241, 2608398), (8307, 2273674), (10026, 1883843), (11147, 1694394), (11999, 1574082), (12246, 1542333), (14482, 1304199), (16614, 1136837), (18369, 1028222), (21723, 869466), (22294, 847197), (23998, 787041), (26533, 711846), (33441, 564798), (35997, 524694), (36738, 514111), (39547, 477594), (43446, 434733), (53066, 355923), (65169, 289822), (66882, 282399), (71994, 262347), (79094, 238797), (79599, 237282), (87449, 215982), (94133, 200646), (100323, 188266), (107991, 174898), (118641, 159198), (130338, 144911)]