42665840

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1249}}^1$

素因数の和:1330

約数の個数: 80

約数和(自身を含む): 115320000

約数和(自身を除く): 72654160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 61, 70, 80, 112, 122, 140, 244, 280, 305, 427, 488, 560, 610, 854, 976, 1220, 1249, 1708, 2135, 2440, 2498, 3416, 4270, 4880, 4996, 6245, 6832, 8540, 8743, 9992, 12490, 17080, 17486, 19984, 24980, 34160, 34972, 43715, 49960, 69944, 76189, 87430, 99920, 139888, 152378, 174860, 304756, 349720, 380945, 533323, 609512, 699440, 761890, 1066646, 1219024, 1523780, 2133292, 2666615, 3047560, 4266584, 5333230, 6095120, 8533168, 10666460, 21332920, 42665840]

約数ペア:

[(1, 42665840), (2, 21332920), (4, 10666460), (5, 8533168), (7, 6095120), (8, 5333230), (10, 4266584), (14, 3047560), (16, 2666615), (20, 2133292), (28, 1523780), (35, 1219024), (40, 1066646), (56, 761890), (61, 699440), (70, 609512), (80, 533323), (112, 380945), (122, 349720), (140, 304756), (244, 174860), (280, 152378), (305, 139888), (427, 99920), (488, 87430), (560, 76189), (610, 69944), (854, 49960), (976, 43715), (1220, 34972), (1249, 34160), (1708, 24980), (2135, 19984), (2440, 17486), (2498, 17080), (3416, 12490), (4270, 9992), (4880, 8743), (4996, 8540), (6245, 6832)]