1247999240

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{73}}^1\times {\mathrm{811}}^1$

素因数の和:943

約数の個数: 128

約数和(自身を含む): 3114961920

約数和(自身を除く): 1866962680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 73, 85, 124, 136, 146, 155, 170, 248, 292, 310, 340, 365, 527, 584, 620, 680, 730, 811, 1054, 1240, 1241, 1460, 1622, 2108, 2263, 2482, 2635, 2920, 3244, 4055, 4216, 4526, 4964, 5270, 6205, 6488, 8110, 9052, 9928, 10540, 11315, 12410, 13787, 16220, 18104, 21080, 22630, 24820, 25141, 27574, 32440, 38471, 45260, 49640, 50282, 55148, 59203, 68935, 76942, 90520, 100564, 110296, 118406, 125705, 137870, 153884, 192355, 201128, 236812, 251410, 275740, 296015, 307768, 384710, 427397, 473624, 502820, 551480, 592030, 769420, 854794, 1005640, 1006451, 1184060, 1538840, 1709588, 1835293, 2012902, 2136985, 2368120, 3419176, 3670586, 4025804, 4273970, 5032255, 7341172, 8051608, 8547940, 9176465, 10064510, 14682344, 17095880, 18352930, 20129020, 31199981, 36705860, 40258040, 62399962, 73411720, 124799924, 155999905, 249599848, 311999810, 623999620, 1247999240]

約数ペア:

[(1, 1247999240), (2, 623999620), (4, 311999810), (5, 249599848), (8, 155999905), (10, 124799924), (17, 73411720), (20, 62399962), (31, 40258040), (34, 36705860), (40, 31199981), (62, 20129020), (68, 18352930), (73, 17095880), (85, 14682344), (124, 10064510), (136, 9176465), (146, 8547940), (155, 8051608), (170, 7341172), (248, 5032255), (292, 4273970), (310, 4025804), (340, 3670586), (365, 3419176), (527, 2368120), (584, 2136985), (620, 2012902), (680, 1835293), (730, 1709588), (811, 1538840), (1054, 1184060), (1240, 1006451), (1241, 1005640), (1460, 854794), (1622, 769420), (2108, 592030), (2263, 551480), (2482, 502820), (2635, 473624), (2920, 427397), (3244, 384710), (4055, 307768), (4216, 296015), (4526, 275740), (4964, 251410), (5270, 236812), (6205, 201128), (6488, 192355), (8110, 153884), (9052, 137870), (9928, 125705), (10540, 118406), (11315, 110296), (12410, 100564), (13787, 90520), (16220, 76942), (18104, 68935), (21080, 59203), (22630, 55148), (24820, 50282), (25141, 49640), (27574, 45260), (32440, 38471)]