990291900

素因数分解:

$2^2\times 3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{8191}}^1$

素因数の和:8252

約数の個数: 144

約数和(自身を含む): 3185573888

約数和(自身を除く): 2195281988

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 31, 39, 50, 52, 60, 62, 65, 75, 78, 93, 100, 124, 130, 150, 155, 156, 186, 195, 260, 300, 310, 325, 372, 390, 403, 465, 620, 650, 775, 780, 806, 930, 975, 1209, 1300, 1550, 1612, 1860, 1950, 2015, 2325, 2418, 3100, 3900, 4030, 4650, 4836, 6045, 8060, 8191, 9300, 10075, 12090, 16382, 20150, 24180, 24573, 30225, 32764, 40300, 40955, 49146, 60450, 81910, 98292, 106483, 120900, 122865, 163820, 204775, 212966, 245730, 253921, 319449, 409550, 425932, 491460, 507842, 532415, 614325, 638898, 761763, 819100, 1015684, 1064830, 1228650, 1269605, 1277796, 1523526, 1597245, 2129660, 2457300, 2539210, 2662075, 3047052, 3194490, 3300973, 3808815, 5078420, 5324150, 6348025, 6388980, 6601946, 7617630, 7986225, 9902919, 10648300, 12696050, 13203892, 15235260, 15972450, 16504865, 19044075, 19805838, 25392100, 31944900, 33009730, 38088150, 39611676, 49514595, 66019460, 76176300, 82524325, 99029190, 165048650, 198058380, 247572975, 330097300, 495145950, 990291900]

約数ペア:

[(1, 990291900), (2, 495145950), (3, 330097300), (4, 247572975), (5, 198058380), (6, 165048650), (10, 99029190), (12, 82524325), (13, 76176300), (15, 66019460), (20, 49514595), (25, 39611676), (26, 38088150), (30, 33009730), (31, 31944900), (39, 25392100), (50, 19805838), (52, 19044075), (60, 16504865), (62, 15972450), (65, 15235260), (75, 13203892), (78, 12696050), (93, 10648300), (100, 9902919), (124, 7986225), (130, 7617630), (150, 6601946), (155, 6388980), (156, 6348025), (186, 5324150), (195, 5078420), (260, 3808815), (300, 3300973), (310, 3194490), (325, 3047052), (372, 2662075), (390, 2539210), (403, 2457300), (465, 2129660), (620, 1597245), (650, 1523526), (775, 1277796), (780, 1269605), (806, 1228650), (930, 1064830), (975, 1015684), (1209, 819100), (1300, 761763), (1550, 638898), (1612, 614325), (1860, 532415), (1950, 507842), (2015, 491460), (2325, 425932), (2418, 409550), (3100, 319449), (3900, 253921), (4030, 245730), (4650, 212966), (4836, 204775), (6045, 163820), (8060, 122865), (8191, 120900), (9300, 106483), (10075, 98292), (12090, 81910), (16382, 60450), (20150, 49146), (24180, 40955), (24573, 40300), (30225, 32764)]