20926980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{211}}^1$

素因数の和:274

約数の個数: 144

約数和(自身を含む): 69451200

約数和(自身を除く): 48524220

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 19, 20, 29, 30, 36, 38, 45, 57, 58, 60, 76, 87, 90, 95, 114, 116, 145, 171, 174, 180, 190, 211, 228, 261, 285, 290, 342, 348, 380, 422, 435, 522, 551, 570, 580, 633, 684, 844, 855, 870, 1044, 1055, 1102, 1140, 1266, 1305, 1653, 1710, 1740, 1899, 2110, 2204, 2532, 2610, 2755, 3165, 3306, 3420, 3798, 4009, 4220, 4959, 5220, 5510, 6119, 6330, 6612, 7596, 8018, 8265, 9495, 9918, 11020, 12027, 12238, 12660, 16036, 16530, 18357, 18990, 19836, 20045, 24054, 24476, 24795, 30595, 33060, 36081, 36714, 37980, 40090, 48108, 49590, 55071, 60135, 61190, 72162, 73428, 80180, 91785, 99180, 110142, 116261, 120270, 122380, 144324, 180405, 183570, 220284, 232522, 240540, 275355, 348783, 360810, 367140, 465044, 550710, 581305, 697566, 721620, 1046349, 1101420, 1162610, 1395132, 1743915, 2092698, 2325220, 3487830, 4185396, 5231745, 6975660, 10463490, 20926980]

約数ペア:

[(1, 20926980), (2, 10463490), (3, 6975660), (4, 5231745), (5, 4185396), (6, 3487830), (9, 2325220), (10, 2092698), (12, 1743915), (15, 1395132), (18, 1162610), (19, 1101420), (20, 1046349), (29, 721620), (30, 697566), (36, 581305), (38, 550710), (45, 465044), (57, 367140), (58, 360810), (60, 348783), (76, 275355), (87, 240540), (90, 232522), (95, 220284), (114, 183570), (116, 180405), (145, 144324), (171, 122380), (174, 120270), (180, 116261), (190, 110142), (211, 99180), (228, 91785), (261, 80180), (285, 73428), (290, 72162), (342, 61190), (348, 60135), (380, 55071), (422, 49590), (435, 48108), (522, 40090), (551, 37980), (570, 36714), (580, 36081), (633, 33060), (684, 30595), (844, 24795), (855, 24476), (870, 24054), (1044, 20045), (1055, 19836), (1102, 18990), (1140, 18357), (1266, 16530), (1305, 16036), (1653, 12660), (1710, 12238), (1740, 12027), (1899, 11020), (2110, 9918), (2204, 9495), (2532, 8265), (2610, 8018), (2755, 7596), (3165, 6612), (3306, 6330), (3420, 6119), (3798, 5510), (4009, 5220), (4220, 4959)]