19811430

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{251}}^1\times {\mathrm{877}}^1$

素因数の和:1141

約数の個数: 48

約数和(自身を含む): 51773904

約数和(自身を除く): 31962474

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 251, 502, 753, 877, 1255, 1506, 1754, 2259, 2510, 2631, 3765, 4385, 4518, 5262, 7530, 7893, 8770, 11295, 13155, 15786, 22590, 26310, 39465, 78930, 220127, 440254, 660381, 1100635, 1320762, 1981143, 2201270, 3301905, 3962286, 6603810, 9905715, 19811430]

約数ペア:

[(1, 19811430), (2, 9905715), (3, 6603810), (5, 3962286), (6, 3301905), (9, 2201270), (10, 1981143), (15, 1320762), (18, 1100635), (30, 660381), (45, 440254), (90, 220127), (251, 78930), (502, 39465), (753, 26310), (877, 22590), (1255, 15786), (1506, 13155), (1754, 11295), (2259, 8770), (2510, 7893), (2631, 7530), (3765, 5262), (4385, 4518)]