20489700

素因数分解:

$2^2\times 3^1\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{887}}^1$

素因数の和:922

約数の個数: 144

約数和(自身を含む): 73995264

約数和(自身を除く): 53505564

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15, 20, 21, 22, 25, 28, 30, 33, 35, 42, 44, 50, 55, 60, 66, 70, 75, 77, 84, 100, 105, 110, 132, 140, 150, 154, 165, 175, 210, 220, 231, 275, 300, 308, 330, 350, 385, 420, 462, 525, 550, 660, 700, 770, 825, 887, 924, 1050, 1100, 1155, 1540, 1650, 1774, 1925, 2100, 2310, 2661, 3300, 3548, 3850, 4435, 4620, 5322, 5775, 6209, 7700, 8870, 9757, 10644, 11550, 12418, 13305, 17740, 18627, 19514, 22175, 23100, 24836, 26610, 29271, 31045, 37254, 39028, 44350, 48785, 53220, 58542, 62090, 66525, 68299, 74508, 88700, 93135, 97570, 117084, 124180, 133050, 136598, 146355, 155225, 186270, 195140, 204897, 243925, 266100, 273196, 292710, 310450, 341495, 372540, 409794, 465675, 487850, 585420, 620900, 682990, 731775, 819588, 931350, 975700, 1024485, 1365980, 1463550, 1707475, 1862700, 2048970, 2927100, 3414950, 4097940, 5122425, 6829900, 10244850, 20489700]

約数ペア:

[(1, 20489700), (2, 10244850), (3, 6829900), (4, 5122425), (5, 4097940), (6, 3414950), (7, 2927100), (10, 2048970), (11, 1862700), (12, 1707475), (14, 1463550), (15, 1365980), (20, 1024485), (21, 975700), (22, 931350), (25, 819588), (28, 731775), (30, 682990), (33, 620900), (35, 585420), (42, 487850), (44, 465675), (50, 409794), (55, 372540), (60, 341495), (66, 310450), (70, 292710), (75, 273196), (77, 266100), (84, 243925), (100, 204897), (105, 195140), (110, 186270), (132, 155225), (140, 146355), (150, 136598), (154, 133050), (165, 124180), (175, 117084), (210, 97570), (220, 93135), (231, 88700), (275, 74508), (300, 68299), (308, 66525), (330, 62090), (350, 58542), (385, 53220), (420, 48785), (462, 44350), (525, 39028), (550, 37254), (660, 31045), (700, 29271), (770, 26610), (825, 24836), (887, 23100), (924, 22175), (1050, 19514), (1100, 18627), (1155, 17740), (1540, 13305), (1650, 12418), (1774, 11550), (1925, 10644), (2100, 9757), (2310, 8870), (2661, 7700), (3300, 6209), (3548, 5775), (3850, 5322), (4435, 4620)]