138891620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{157}}^1$

素因数の和:333

約数の個数: 96

約数和(自身を含む): 344010240

約数和(自身を除く): 205118620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 89, 140, 142, 157, 178, 284, 314, 355, 356, 445, 497, 623, 628, 710, 785, 890, 994, 1099, 1246, 1420, 1570, 1780, 1988, 2198, 2485, 2492, 3115, 3140, 4396, 4970, 5495, 6230, 6319, 9940, 10990, 11147, 12460, 12638, 13973, 21980, 22294, 25276, 27946, 31595, 44233, 44588, 55735, 55892, 63190, 69865, 78029, 88466, 97811, 111470, 126380, 139730, 156058, 176932, 195622, 221165, 222940, 279460, 312116, 390145, 391244, 442330, 489055, 780290, 884660, 978110, 992083, 1560580, 1956220, 1984166, 3968332, 4960415, 6944581, 9920830, 13889162, 19841660, 27778324, 34722905, 69445810, 138891620]

約数ペア:

[(1, 138891620), (2, 69445810), (4, 34722905), (5, 27778324), (7, 19841660), (10, 13889162), (14, 9920830), (20, 6944581), (28, 4960415), (35, 3968332), (70, 1984166), (71, 1956220), (89, 1560580), (140, 992083), (142, 978110), (157, 884660), (178, 780290), (284, 489055), (314, 442330), (355, 391244), (356, 390145), (445, 312116), (497, 279460), (623, 222940), (628, 221165), (710, 195622), (785, 176932), (890, 156058), (994, 139730), (1099, 126380), (1246, 111470), (1420, 97811), (1570, 88466), (1780, 78029), (1988, 69865), (2198, 63190), (2485, 55892), (2492, 55735), (3115, 44588), (3140, 44233), (4396, 31595), (4970, 27946), (5495, 25276), (6230, 22294), (6319, 21980), (9940, 13973), (10990, 12638), (11147, 12460)]