278320980

素因数分解:

$2^2\times 3^1\times 5^1\times 7^2\times {\mathrm{137}}^1\times {\mathrm{691}}^1$

素因数の和:854

約数の個数: 144

約数和(自身を含む): 914469696

約数和(自身を除く): 636148716

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 49, 60, 70, 84, 98, 105, 137, 140, 147, 196, 210, 245, 274, 294, 411, 420, 490, 548, 588, 685, 691, 735, 822, 959, 980, 1370, 1382, 1470, 1644, 1918, 2055, 2073, 2740, 2764, 2877, 2940, 3455, 3836, 4110, 4146, 4795, 4837, 5754, 6713, 6910, 8220, 8292, 9590, 9674, 10365, 11508, 13426, 13820, 14385, 14511, 19180, 19348, 20139, 20730, 24185, 26852, 28770, 29022, 33565, 33859, 40278, 41460, 48370, 57540, 58044, 67130, 67718, 72555, 80556, 94667, 96740, 100695, 101577, 134260, 135436, 145110, 169295, 189334, 201390, 203154, 284001, 290220, 338590, 378668, 402780, 406308, 473335, 507885, 568002, 662669, 677180, 946670, 1015770, 1136004, 1325338, 1420005, 1893340, 1988007, 2031540, 2650676, 2840010, 3313345, 3976014, 4638683, 5680020, 6626690, 7952028, 9277366, 9940035, 13253380, 13916049, 18554732, 19880070, 23193415, 27832098, 39760140, 46386830, 55664196, 69580245, 92773660, 139160490, 278320980]

約数ペア:

[(1, 278320980), (2, 139160490), (3, 92773660), (4, 69580245), (5, 55664196), (6, 46386830), (7, 39760140), (10, 27832098), (12, 23193415), (14, 19880070), (15, 18554732), (20, 13916049), (21, 13253380), (28, 9940035), (30, 9277366), (35, 7952028), (42, 6626690), (49, 5680020), (60, 4638683), (70, 3976014), (84, 3313345), (98, 2840010), (105, 2650676), (137, 2031540), (140, 1988007), (147, 1893340), (196, 1420005), (210, 1325338), (245, 1136004), (274, 1015770), (294, 946670), (411, 677180), (420, 662669), (490, 568002), (548, 507885), (588, 473335), (685, 406308), (691, 402780), (735, 378668), (822, 338590), (959, 290220), (980, 284001), (1370, 203154), (1382, 201390), (1470, 189334), (1644, 169295), (1918, 145110), (2055, 135436), (2073, 134260), (2740, 101577), (2764, 100695), (2877, 96740), (2940, 94667), (3455, 80556), (3836, 72555), (4110, 67718), (4146, 67130), (4795, 58044), (4837, 57540), (5754, 48370), (6713, 41460), (6910, 40278), (8220, 33859), (8292, 33565), (9590, 29022), (9674, 28770), (10365, 26852), (11508, 24185), (13426, 20730), (13820, 20139), (14385, 19348), (14511, 19180)]