15987972

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{11}}^4\times {\mathrm{13}}^1$

素因数の和:71

約数の個数: 120

約数和(自身を含む): 50505280

約数和(自身を除く): 34517308

約数列:

[1, 2, 3, 4, 6, 7, 11, 12, 13, 14, 21, 22, 26, 28, 33, 39, 42, 44, 52, 66, 77, 78, 84, 91, 121, 132, 143, 154, 156, 182, 231, 242, 273, 286, 308, 363, 364, 429, 462, 484, 546, 572, 726, 847, 858, 924, 1001, 1092, 1331, 1452, 1573, 1694, 1716, 2002, 2541, 2662, 3003, 3146, 3388, 3993, 4004, 4719, 5082, 5324, 6006, 6292, 7986, 9317, 9438, 10164, 11011, 12012, 14641, 15972, 17303, 18634, 18876, 22022, 27951, 29282, 33033, 34606, 37268, 43923, 44044, 51909, 55902, 58564, 66066, 69212, 87846, 102487, 103818, 111804, 121121, 132132, 175692, 190333, 204974, 207636, 242242, 307461, 363363, 380666, 409948, 484484, 570999, 614922, 726726, 761332, 1141998, 1229844, 1332331, 1453452, 2283996, 2664662, 3996993, 5329324, 7993986, 15987972]

約数ペア:

[(1, 15987972), (2, 7993986), (3, 5329324), (4, 3996993), (6, 2664662), (7, 2283996), (11, 1453452), (12, 1332331), (13, 1229844), (14, 1141998), (21, 761332), (22, 726726), (26, 614922), (28, 570999), (33, 484484), (39, 409948), (42, 380666), (44, 363363), (52, 307461), (66, 242242), (77, 207636), (78, 204974), (84, 190333), (91, 175692), (121, 132132), (132, 121121), (143, 111804), (154, 103818), (156, 102487), (182, 87846), (231, 69212), (242, 66066), (273, 58564), (286, 55902), (308, 51909), (363, 44044), (364, 43923), (429, 37268), (462, 34606), (484, 33033), (546, 29282), (572, 27951), (726, 22022), (847, 18876), (858, 18634), (924, 17303), (1001, 15972), (1092, 14641), (1331, 12012), (1452, 11011), (1573, 10164), (1694, 9438), (1716, 9317), (2002, 7986), (2541, 6292), (2662, 6006), (3003, 5324), (3146, 5082), (3388, 4719), (3993, 4004)]