20581750

素因数分解:

$2^1\times 5^3\times 7^1\times {\mathrm{19}}^1\times {\mathrm{619}}^1$

素因数の和:662

約数の個数: 64

約数和(自身を含む): 46425600

約数和(自身を除く): 25843850

約数列:

[1, 2, 5, 7, 10, 14, 19, 25, 35, 38, 50, 70, 95, 125, 133, 175, 190, 250, 266, 350, 475, 619, 665, 875, 950, 1238, 1330, 1750, 2375, 3095, 3325, 4333, 4750, 6190, 6650, 8666, 11761, 15475, 16625, 21665, 23522, 30950, 33250, 43330, 58805, 77375, 82327, 108325, 117610, 154750, 164654, 216650, 294025, 411635, 541625, 588050, 823270, 1083250, 1470125, 2058175, 2940250, 4116350, 10290875, 20581750]

約数ペア:

[(1, 20581750), (2, 10290875), (5, 4116350), (7, 2940250), (10, 2058175), (14, 1470125), (19, 1083250), (25, 823270), (35, 588050), (38, 541625), (50, 411635), (70, 294025), (95, 216650), (125, 164654), (133, 154750), (175, 117610), (190, 108325), (250, 82327), (266, 77375), (350, 58805), (475, 43330), (619, 33250), (665, 30950), (875, 23522), (950, 21665), (1238, 16625), (1330, 15475), (1750, 11761), (2375, 8666), (3095, 6650), (3325, 6190), (4333, 4750)]