1901900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:64

約数の個数: 144

約数和(自身を含む): 5832960

約数和(自身を除く): 3931060

約数列:

[1, 2, 4, 5, 7, 10, 11, 13, 14, 19, 20, 22, 25, 26, 28, 35, 38, 44, 50, 52, 55, 65, 70, 76, 77, 91, 95, 100, 110, 130, 133, 140, 143, 154, 175, 182, 190, 209, 220, 247, 260, 266, 275, 286, 308, 325, 350, 364, 380, 385, 418, 455, 475, 494, 532, 550, 572, 650, 665, 700, 715, 770, 836, 910, 950, 988, 1001, 1045, 1100, 1235, 1300, 1330, 1430, 1463, 1540, 1729, 1820, 1900, 1925, 2002, 2090, 2275, 2470, 2660, 2717, 2860, 2926, 3325, 3458, 3575, 3850, 4004, 4180, 4550, 4940, 5005, 5225, 5434, 5852, 6175, 6650, 6916, 7150, 7315, 7700, 8645, 9100, 10010, 10450, 10868, 12350, 13300, 13585, 14300, 14630, 17290, 19019, 20020, 20900, 24700, 25025, 27170, 29260, 34580, 36575, 38038, 43225, 50050, 54340, 67925, 73150, 76076, 86450, 95095, 100100, 135850, 146300, 172900, 190190, 271700, 380380, 475475, 950950, 1901900]

約数ペア:

[(1, 1901900), (2, 950950), (4, 475475), (5, 380380), (7, 271700), (10, 190190), (11, 172900), (13, 146300), (14, 135850), (19, 100100), (20, 95095), (22, 86450), (25, 76076), (26, 73150), (28, 67925), (35, 54340), (38, 50050), (44, 43225), (50, 38038), (52, 36575), (55, 34580), (65, 29260), (70, 27170), (76, 25025), (77, 24700), (91, 20900), (95, 20020), (100, 19019), (110, 17290), (130, 14630), (133, 14300), (140, 13585), (143, 13300), (154, 12350), (175, 10868), (182, 10450), (190, 10010), (209, 9100), (220, 8645), (247, 7700), (260, 7315), (266, 7150), (275, 6916), (286, 6650), (308, 6175), (325, 5852), (350, 5434), (364, 5225), (380, 5005), (385, 4940), (418, 4550), (455, 4180), (475, 4004), (494, 3850), (532, 3575), (550, 3458), (572, 3325), (650, 2926), (665, 2860), (700, 2717), (715, 2660), (770, 2470), (836, 2275), (910, 2090), (950, 2002), (988, 1925), (1001, 1900), (1045, 1820), (1100, 1729), (1235, 1540), (1300, 1463), (1330, 1430)]