18945480

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{251}}^1$

素因数の和:319

約数の個数: 128

約数和(自身を含む): 62052480

約数和(自身を除く): 43107000

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 37, 40, 51, 60, 68, 74, 85, 102, 111, 120, 136, 148, 170, 185, 204, 222, 251, 255, 296, 340, 370, 408, 444, 502, 510, 555, 629, 680, 740, 753, 888, 1004, 1020, 1110, 1255, 1258, 1480, 1506, 1887, 2008, 2040, 2220, 2510, 2516, 3012, 3145, 3765, 3774, 4267, 4440, 5020, 5032, 6024, 6290, 7530, 7548, 8534, 9287, 9435, 10040, 12580, 12801, 15060, 15096, 17068, 18574, 18870, 21335, 25160, 25602, 27861, 30120, 34136, 37148, 37740, 42670, 46435, 51204, 55722, 64005, 74296, 75480, 85340, 92870, 102408, 111444, 128010, 139305, 157879, 170680, 185740, 222888, 256020, 278610, 315758, 371480, 473637, 512040, 557220, 631516, 789395, 947274, 1114440, 1263032, 1578790, 1894548, 2368185, 3157580, 3789096, 4736370, 6315160, 9472740, 18945480]

約数ペア:

[(1, 18945480), (2, 9472740), (3, 6315160), (4, 4736370), (5, 3789096), (6, 3157580), (8, 2368185), (10, 1894548), (12, 1578790), (15, 1263032), (17, 1114440), (20, 947274), (24, 789395), (30, 631516), (34, 557220), (37, 512040), (40, 473637), (51, 371480), (60, 315758), (68, 278610), (74, 256020), (85, 222888), (102, 185740), (111, 170680), (120, 157879), (136, 139305), (148, 128010), (170, 111444), (185, 102408), (204, 92870), (222, 85340), (251, 75480), (255, 74296), (296, 64005), (340, 55722), (370, 51204), (408, 46435), (444, 42670), (502, 37740), (510, 37148), (555, 34136), (629, 30120), (680, 27861), (740, 25602), (753, 25160), (888, 21335), (1004, 18870), (1020, 18574), (1110, 17068), (1255, 15096), (1258, 15060), (1480, 12801), (1506, 12580), (1887, 10040), (2008, 9435), (2040, 9287), (2220, 8534), (2510, 7548), (2516, 7530), (3012, 6290), (3145, 6024), (3765, 5032), (3774, 5020), (4267, 4440)]