20868750

素因数分解:

$2^1\times 3^2\times 5^5\times 7^1\times {\mathrm{53}}^1$

素因数の和:93

約数の個数: 144

約数和(自身を含む): 65808288

約数和(自身を除く): 44939538

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 25, 30, 35, 42, 45, 50, 53, 63, 70, 75, 90, 105, 106, 125, 126, 150, 159, 175, 210, 225, 250, 265, 315, 318, 350, 371, 375, 450, 477, 525, 530, 625, 630, 742, 750, 795, 875, 954, 1050, 1113, 1125, 1250, 1325, 1575, 1590, 1750, 1855, 1875, 2226, 2250, 2385, 2625, 2650, 3125, 3150, 3339, 3710, 3750, 3975, 4375, 4770, 5250, 5565, 5625, 6250, 6625, 6678, 7875, 7950, 8750, 9275, 9375, 11130, 11250, 11925, 13125, 13250, 15750, 16695, 18550, 18750, 19875, 21875, 23850, 26250, 27825, 28125, 33125, 33390, 39375, 39750, 43750, 46375, 55650, 56250, 59625, 65625, 66250, 78750, 83475, 92750, 99375, 119250, 131250, 139125, 165625, 166950, 196875, 198750, 231875, 278250, 298125, 331250, 393750, 417375, 463750, 496875, 596250, 695625, 834750, 993750, 1159375, 1391250, 1490625, 2086875, 2318750, 2981250, 3478125, 4173750, 6956250, 10434375, 20868750]

約数ペア:

[(1, 20868750), (2, 10434375), (3, 6956250), (5, 4173750), (6, 3478125), (7, 2981250), (9, 2318750), (10, 2086875), (14, 1490625), (15, 1391250), (18, 1159375), (21, 993750), (25, 834750), (30, 695625), (35, 596250), (42, 496875), (45, 463750), (50, 417375), (53, 393750), (63, 331250), (70, 298125), (75, 278250), (90, 231875), (105, 198750), (106, 196875), (125, 166950), (126, 165625), (150, 139125), (159, 131250), (175, 119250), (210, 99375), (225, 92750), (250, 83475), (265, 78750), (315, 66250), (318, 65625), (350, 59625), (371, 56250), (375, 55650), (450, 46375), (477, 43750), (525, 39750), (530, 39375), (625, 33390), (630, 33125), (742, 28125), (750, 27825), (795, 26250), (875, 23850), (954, 21875), (1050, 19875), (1113, 18750), (1125, 18550), (1250, 16695), (1325, 15750), (1575, 13250), (1590, 13125), (1750, 11925), (1855, 11250), (1875, 11130), (2226, 9375), (2250, 9275), (2385, 8750), (2625, 7950), (2650, 7875), (3125, 6678), (3150, 6625), (3339, 6250), (3710, 5625), (3750, 5565), (3975, 5250), (4375, 4770)]