18861640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1$

素因数の和:143

約数の個数: 128

約数和(自身を含む): 52254720

約数和(自身を除く): 33393080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 41, 53, 56, 62, 70, 82, 106, 124, 140, 155, 164, 205, 212, 217, 248, 265, 280, 287, 310, 328, 371, 410, 424, 434, 530, 574, 620, 742, 820, 868, 1060, 1085, 1148, 1240, 1271, 1435, 1484, 1640, 1643, 1736, 1855, 2120, 2170, 2173, 2296, 2542, 2870, 2968, 3286, 3710, 4340, 4346, 5084, 5740, 6355, 6572, 7420, 8215, 8680, 8692, 8897, 10168, 10865, 11480, 11501, 12710, 13144, 14840, 15211, 16430, 17384, 17794, 21730, 23002, 25420, 30422, 32860, 35588, 43460, 44485, 46004, 50840, 57505, 60844, 65720, 67363, 71176, 76055, 86920, 88970, 92008, 115010, 121688, 134726, 152110, 177940, 230020, 269452, 304220, 336815, 355880, 460040, 471541, 538904, 608440, 673630, 943082, 1347260, 1886164, 2357705, 2694520, 3772328, 4715410, 9430820, 18861640]

約数ペア:

[(1, 18861640), (2, 9430820), (4, 4715410), (5, 3772328), (7, 2694520), (8, 2357705), (10, 1886164), (14, 1347260), (20, 943082), (28, 673630), (31, 608440), (35, 538904), (40, 471541), (41, 460040), (53, 355880), (56, 336815), (62, 304220), (70, 269452), (82, 230020), (106, 177940), (124, 152110), (140, 134726), (155, 121688), (164, 115010), (205, 92008), (212, 88970), (217, 86920), (248, 76055), (265, 71176), (280, 67363), (287, 65720), (310, 60844), (328, 57505), (371, 50840), (410, 46004), (424, 44485), (434, 43460), (530, 35588), (574, 32860), (620, 30422), (742, 25420), (820, 23002), (868, 21730), (1060, 17794), (1085, 17384), (1148, 16430), (1240, 15211), (1271, 14840), (1435, 13144), (1484, 12710), (1640, 11501), (1643, 11480), (1736, 10865), (1855, 10168), (2120, 8897), (2170, 8692), (2173, 8680), (2296, 8215), (2542, 7420), (2870, 6572), (2968, 6355), (3286, 5740), (3710, 5084), (4340, 4346)]