61721000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{181}}^1$

素因数の和:244

約数の個数: 128

約数和(自身を含む): 163537920

約数和(自身を除く): 101816920

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 31, 40, 44, 50, 55, 62, 88, 100, 110, 124, 125, 155, 181, 200, 220, 248, 250, 275, 310, 341, 362, 440, 500, 550, 620, 682, 724, 775, 905, 1000, 1100, 1240, 1364, 1375, 1448, 1550, 1705, 1810, 1991, 2200, 2728, 2750, 3100, 3410, 3620, 3875, 3982, 4525, 5500, 5611, 6200, 6820, 7240, 7750, 7964, 8525, 9050, 9955, 11000, 11222, 13640, 15500, 15928, 17050, 18100, 19910, 22444, 22625, 28055, 31000, 34100, 36200, 39820, 42625, 44888, 45250, 49775, 56110, 61721, 68200, 79640, 85250, 90500, 99550, 112220, 123442, 140275, 170500, 181000, 199100, 224440, 246884, 248875, 280550, 308605, 341000, 398200, 493768, 497750, 561100, 617210, 701375, 995500, 1122200, 1234420, 1402750, 1543025, 1991000, 2468840, 2805500, 3086050, 5611000, 6172100, 7715125, 12344200, 15430250, 30860500, 61721000]

約数ペア:

[(1, 61721000), (2, 30860500), (4, 15430250), (5, 12344200), (8, 7715125), (10, 6172100), (11, 5611000), (20, 3086050), (22, 2805500), (25, 2468840), (31, 1991000), (40, 1543025), (44, 1402750), (50, 1234420), (55, 1122200), (62, 995500), (88, 701375), (100, 617210), (110, 561100), (124, 497750), (125, 493768), (155, 398200), (181, 341000), (200, 308605), (220, 280550), (248, 248875), (250, 246884), (275, 224440), (310, 199100), (341, 181000), (362, 170500), (440, 140275), (500, 123442), (550, 112220), (620, 99550), (682, 90500), (724, 85250), (775, 79640), (905, 68200), (1000, 61721), (1100, 56110), (1240, 49775), (1364, 45250), (1375, 44888), (1448, 42625), (1550, 39820), (1705, 36200), (1810, 34100), (1991, 31000), (2200, 28055), (2728, 22625), (2750, 22444), (3100, 19910), (3410, 18100), (3620, 17050), (3875, 15928), (3982, 15500), (4525, 13640), (5500, 11222), (5611, 11000), (6200, 9955), (6820, 9050), (7240, 8525), (7750, 7964)]