18498780

素因数分解:

$2^2\times 3^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{601}}^1$

素因数の和:641

約数の個数: 120

約数和(自身を含む): 61187280

約数和(自身を除く): 42688500

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 27, 30, 36, 38, 45, 54, 57, 60, 76, 81, 90, 95, 108, 114, 135, 162, 171, 180, 190, 228, 270, 285, 324, 342, 380, 405, 513, 540, 570, 601, 684, 810, 855, 1026, 1140, 1202, 1539, 1620, 1710, 1803, 2052, 2404, 2565, 3005, 3078, 3420, 3606, 5130, 5409, 6010, 6156, 7212, 7695, 9015, 10260, 10818, 11419, 12020, 15390, 16227, 18030, 21636, 22838, 27045, 30780, 32454, 34257, 36060, 45676, 48681, 54090, 57095, 64908, 68514, 81135, 97362, 102771, 108180, 114190, 137028, 162270, 171285, 194724, 205542, 228380, 243405, 308313, 324540, 342570, 411084, 486810, 513855, 616626, 685140, 924939, 973620, 1027710, 1233252, 1541565, 1849878, 2055420, 3083130, 3699756, 4624695, 6166260, 9249390, 18498780]

約数ペア:

[(1, 18498780), (2, 9249390), (3, 6166260), (4, 4624695), (5, 3699756), (6, 3083130), (9, 2055420), (10, 1849878), (12, 1541565), (15, 1233252), (18, 1027710), (19, 973620), (20, 924939), (27, 685140), (30, 616626), (36, 513855), (38, 486810), (45, 411084), (54, 342570), (57, 324540), (60, 308313), (76, 243405), (81, 228380), (90, 205542), (95, 194724), (108, 171285), (114, 162270), (135, 137028), (162, 114190), (171, 108180), (180, 102771), (190, 97362), (228, 81135), (270, 68514), (285, 64908), (324, 57095), (342, 54090), (380, 48681), (405, 45676), (513, 36060), (540, 34257), (570, 32454), (601, 30780), (684, 27045), (810, 22838), (855, 21636), (1026, 18030), (1140, 16227), (1202, 15390), (1539, 12020), (1620, 11419), (1710, 10818), (1803, 10260), (2052, 9015), (2404, 7695), (2565, 7212), (3005, 6156), (3078, 6010), (3420, 5409), (3606, 5130)]