20189750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{83}}^1\times {\mathrm{139}}^1$

素因数の和:246

約数の個数: 64

約数和(自身を含む): 44029440

約数和(自身を除く): 23839690

約数列:

[1, 2, 5, 7, 10, 14, 25, 35, 50, 70, 83, 125, 139, 166, 175, 250, 278, 350, 415, 581, 695, 830, 875, 973, 1162, 1390, 1750, 1946, 2075, 2905, 3475, 4150, 4865, 5810, 6950, 9730, 10375, 11537, 14525, 17375, 20750, 23074, 24325, 29050, 34750, 48650, 57685, 72625, 80759, 115370, 121625, 145250, 161518, 243250, 288425, 403795, 576850, 807590, 1442125, 2018975, 2884250, 4037950, 10094875, 20189750]

約数ペア:

[(1, 20189750), (2, 10094875), (5, 4037950), (7, 2884250), (10, 2018975), (14, 1442125), (25, 807590), (35, 576850), (50, 403795), (70, 288425), (83, 243250), (125, 161518), (139, 145250), (166, 121625), (175, 115370), (250, 80759), (278, 72625), (350, 57685), (415, 48650), (581, 34750), (695, 29050), (830, 24325), (875, 23074), (973, 20750), (1162, 17375), (1390, 14525), (1750, 11537), (1946, 10375), (2075, 9730), (2905, 6950), (3475, 5810), (4150, 4865)]