19713350

素因数分解:

$2^1\times 5^2\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{173}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 38448432

約数和(自身を除く): 18735082

約数列:

[1, 2, 5, 10, 25, 43, 50, 53, 86, 106, 173, 215, 265, 346, 430, 530, 865, 1075, 1325, 1730, 2150, 2279, 2650, 4325, 4558, 7439, 8650, 9169, 11395, 14878, 18338, 22790, 37195, 45845, 56975, 74390, 91690, 113950, 185975, 229225, 371950, 394267, 458450, 788534, 1971335, 3942670, 9856675, 19713350]

約数ペア:

[(1, 19713350), (2, 9856675), (5, 3942670), (10, 1971335), (25, 788534), (43, 458450), (50, 394267), (53, 371950), (86, 229225), (106, 185975), (173, 113950), (215, 91690), (265, 74390), (346, 56975), (430, 45845), (530, 37195), (865, 22790), (1075, 18338), (1325, 14878), (1730, 11395), (2150, 9169), (2279, 8650), (2650, 7439), (4325, 4558)]