212111820

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{569}}^1$

素因数の和:712

約数の個数: 144

約数和(自身を含む): 684684000

約数和(自身を除く): 472572180

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 30, 36, 38, 45, 57, 60, 76, 90, 95, 109, 114, 171, 180, 190, 218, 228, 285, 327, 342, 380, 436, 545, 569, 570, 654, 684, 855, 981, 1090, 1138, 1140, 1308, 1635, 1707, 1710, 1962, 2071, 2180, 2276, 2845, 3270, 3414, 3420, 3924, 4142, 4905, 5121, 5690, 6213, 6540, 6828, 8284, 8535, 9810, 10242, 10355, 10811, 11380, 12426, 17070, 18639, 19620, 20484, 20710, 21622, 24852, 25605, 31065, 32433, 34140, 37278, 41420, 43244, 51210, 54055, 62021, 62130, 64866, 74556, 93195, 97299, 102420, 108110, 124042, 124260, 129732, 162165, 186063, 186390, 194598, 216220, 248084, 310105, 324330, 372126, 372780, 389196, 486495, 558189, 620210, 648660, 744252, 930315, 972990, 1116378, 1178399, 1240420, 1860630, 1945980, 2232756, 2356798, 2790945, 3535197, 3721260, 4713596, 5581890, 5891995, 7070394, 10605591, 11163780, 11783990, 14140788, 17675985, 21211182, 23567980, 35351970, 42422364, 53027955, 70703940, 106055910, 212111820]

約数ペア:

[(1, 212111820), (2, 106055910), (3, 70703940), (4, 53027955), (5, 42422364), (6, 35351970), (9, 23567980), (10, 21211182), (12, 17675985), (15, 14140788), (18, 11783990), (19, 11163780), (20, 10605591), (30, 7070394), (36, 5891995), (38, 5581890), (45, 4713596), (57, 3721260), (60, 3535197), (76, 2790945), (90, 2356798), (95, 2232756), (109, 1945980), (114, 1860630), (171, 1240420), (180, 1178399), (190, 1116378), (218, 972990), (228, 930315), (285, 744252), (327, 648660), (342, 620210), (380, 558189), (436, 486495), (545, 389196), (569, 372780), (570, 372126), (654, 324330), (684, 310105), (855, 248084), (981, 216220), (1090, 194598), (1138, 186390), (1140, 186063), (1308, 162165), (1635, 129732), (1707, 124260), (1710, 124042), (1962, 108110), (2071, 102420), (2180, 97299), (2276, 93195), (2845, 74556), (3270, 64866), (3414, 62130), (3420, 62021), (3924, 54055), (4142, 51210), (4905, 43244), (5121, 41420), (5690, 37278), (6213, 34140), (6540, 32433), (6828, 31065), (8284, 25605), (8535, 24852), (9810, 21622), (10242, 20710), (10355, 20484), (10811, 19620), (11380, 18639), (12426, 17070)]