19993700

素因数分解:

$2^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:669

約数の個数: 72

約数和(自身を含む): 48434400

約数和(自身を除く): 28440700

約数列:

[1, 2, 4, 5, 10, 17, 19, 20, 25, 34, 38, 50, 68, 76, 85, 95, 100, 170, 190, 323, 340, 380, 425, 475, 619, 646, 850, 950, 1238, 1292, 1615, 1700, 1900, 2476, 3095, 3230, 6190, 6460, 8075, 10523, 11761, 12380, 15475, 16150, 21046, 23522, 30950, 32300, 42092, 47044, 52615, 58805, 61900, 105230, 117610, 199937, 210460, 235220, 263075, 294025, 399874, 526150, 588050, 799748, 999685, 1052300, 1176100, 1999370, 3998740, 4998425, 9996850, 19993700]

約数ペア:

[(1, 19993700), (2, 9996850), (4, 4998425), (5, 3998740), (10, 1999370), (17, 1176100), (19, 1052300), (20, 999685), (25, 799748), (34, 588050), (38, 526150), (50, 399874), (68, 294025), (76, 263075), (85, 235220), (95, 210460), (100, 199937), (170, 117610), (190, 105230), (323, 61900), (340, 58805), (380, 52615), (425, 47044), (475, 42092), (619, 32300), (646, 30950), (850, 23522), (950, 21046), (1238, 16150), (1292, 15475), (1615, 12380), (1700, 11761), (1900, 10523), (2476, 8075), (3095, 6460), (3230, 6190)]