20587140

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16339}}^1$

素因数の和:16361

約数の個数: 72

約数和(自身を含む): 71373120

約数和(自身を除く): 50785980

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16339, 32678, 49017, 65356, 81695, 98034, 114373, 147051, 163390, 196068, 228746, 245085, 294102, 326780, 343119, 457492, 490170, 571865, 588204, 686238, 735255, 980340, 1029357, 1143730, 1372476, 1470510, 1715595, 2058714, 2287460, 2941020, 3431190, 4117428, 5146785, 6862380, 10293570, 20587140]

約数ペア:

[(1, 20587140), (2, 10293570), (3, 6862380), (4, 5146785), (5, 4117428), (6, 3431190), (7, 2941020), (9, 2287460), (10, 2058714), (12, 1715595), (14, 1470510), (15, 1372476), (18, 1143730), (20, 1029357), (21, 980340), (28, 735255), (30, 686238), (35, 588204), (36, 571865), (42, 490170), (45, 457492), (60, 343119), (63, 326780), (70, 294102), (84, 245085), (90, 228746), (105, 196068), (126, 163390), (140, 147051), (180, 114373), (210, 98034), (252, 81695), (315, 65356), (420, 49017), (630, 32678), (1260, 16339)]