19899550

素因数分解:

$2^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{97}}^1\times {\mathrm{373}}^1$

素因数の和:493

約数の個数: 48

約数和(自身を含む): 40903632

約数和(自身を除く): 21004082

約数列:

[1, 2, 5, 10, 11, 22, 25, 50, 55, 97, 110, 194, 275, 373, 485, 550, 746, 970, 1067, 1865, 2134, 2425, 3730, 4103, 4850, 5335, 8206, 9325, 10670, 18650, 20515, 26675, 36181, 41030, 53350, 72362, 102575, 180905, 205150, 361810, 397991, 795982, 904525, 1809050, 1989955, 3979910, 9949775, 19899550]

約数ペア:

[(1, 19899550), (2, 9949775), (5, 3979910), (10, 1989955), (11, 1809050), (22, 904525), (25, 795982), (50, 397991), (55, 361810), (97, 205150), (110, 180905), (194, 102575), (275, 72362), (373, 53350), (485, 41030), (550, 36181), (746, 26675), (970, 20515), (1067, 18650), (1865, 10670), (2134, 9325), (2425, 8206), (3730, 5335), (4103, 4850)]