20335875

素因数分解:

$3^1\times 5^3\times 7^1\times {\mathrm{61}}^1\times {\mathrm{127}}^1$

素因数の和:213

約数の個数: 64

約数和(自身を含む): 39616512

約数和(自身を除く): 19280637

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 61, 75, 105, 125, 127, 175, 183, 305, 375, 381, 427, 525, 635, 875, 889, 915, 1281, 1525, 1905, 2135, 2625, 2667, 3175, 4445, 4575, 6405, 7625, 7747, 9525, 10675, 13335, 15875, 22225, 22875, 23241, 32025, 38735, 47625, 53375, 54229, 66675, 111125, 116205, 160125, 162687, 193675, 271145, 333375, 581025, 813435, 968375, 1355725, 2905125, 4067175, 6778625, 20335875]

約数ペア:

[(1, 20335875), (3, 6778625), (5, 4067175), (7, 2905125), (15, 1355725), (21, 968375), (25, 813435), (35, 581025), (61, 333375), (75, 271145), (105, 193675), (125, 162687), (127, 160125), (175, 116205), (183, 111125), (305, 66675), (375, 54229), (381, 53375), (427, 47625), (525, 38735), (635, 32025), (875, 23241), (889, 22875), (915, 22225), (1281, 15875), (1525, 13335), (1905, 10675), (2135, 9525), (2625, 7747), (2667, 7625), (3175, 6405), (4445, 4575)]