19898175

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{271}}^1$

素因数の和:384

約数の個数: 48

約数和(自身を含む): 36426240

約数和(自身を除く): 16528065

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 89, 165, 267, 271, 275, 445, 813, 825, 979, 1335, 1355, 2225, 2937, 2981, 4065, 4895, 6675, 6775, 8943, 14685, 14905, 20325, 24119, 24475, 44715, 72357, 73425, 74525, 120595, 223575, 265309, 361785, 602975, 795927, 1326545, 1808925, 3979635, 6632725, 19898175]

約数ペア:

[(1, 19898175), (3, 6632725), (5, 3979635), (11, 1808925), (15, 1326545), (25, 795927), (33, 602975), (55, 361785), (75, 265309), (89, 223575), (165, 120595), (267, 74525), (271, 73425), (275, 72357), (445, 44715), (813, 24475), (825, 24119), (979, 20325), (1335, 14905), (1355, 14685), (2225, 8943), (2937, 6775), (2981, 6675), (4065, 4895)]