19914435

素因数分解:

$3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{271}}^1$

素因数の和:376

約数の個数: 48

約数和(自身を含む): 36661248

約数和(自身を除く): 16746813

約数列:

[1, 3, 5, 9, 15, 23, 45, 69, 71, 115, 207, 213, 271, 345, 355, 639, 813, 1035, 1065, 1355, 1633, 2439, 3195, 4065, 4899, 6233, 8165, 12195, 14697, 18699, 19241, 24495, 31165, 56097, 57723, 73485, 93495, 96205, 173169, 280485, 288615, 442543, 865845, 1327629, 2212715, 3982887, 6638145, 19914435]

約数ペア:

[(1, 19914435), (3, 6638145), (5, 3982887), (9, 2212715), (15, 1327629), (23, 865845), (45, 442543), (69, 288615), (71, 280485), (115, 173169), (207, 96205), (213, 93495), (271, 73485), (345, 57723), (355, 56097), (639, 31165), (813, 24495), (1035, 19241), (1065, 18699), (1355, 14697), (1633, 12195), (2439, 8165), (3195, 6233), (4065, 4899)]