278728996

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^3\times {\mathrm{23}}^1\times {\mathrm{197}}^1$

素因数の和:270

約数の個数: 96

約数和(自身を含む): 633346560

約数和(自身を除く): 354617564

約数列:

[1, 2, 4, 7, 13, 14, 23, 26, 28, 46, 52, 91, 92, 161, 169, 182, 197, 299, 322, 338, 364, 394, 598, 644, 676, 788, 1183, 1196, 1379, 2093, 2197, 2366, 2561, 2758, 3887, 4186, 4394, 4531, 4732, 5122, 5516, 7774, 8372, 8788, 9062, 10244, 15379, 15548, 17927, 18124, 27209, 30758, 31717, 33293, 35854, 50531, 54418, 58903, 61516, 63434, 66586, 71708, 101062, 108836, 117806, 126868, 133172, 202124, 233051, 235612, 353717, 412321, 432809, 466102, 707434, 765739, 824642, 865618, 932204, 1414868, 1531478, 1649284, 1731236, 3029663, 3062956, 5360173, 6059326, 9954607, 10720346, 12118652, 19909214, 21440692, 39818428, 69682249, 139364498, 278728996]

約数ペア:

[(1, 278728996), (2, 139364498), (4, 69682249), (7, 39818428), (13, 21440692), (14, 19909214), (23, 12118652), (26, 10720346), (28, 9954607), (46, 6059326), (52, 5360173), (91, 3062956), (92, 3029663), (161, 1731236), (169, 1649284), (182, 1531478), (197, 1414868), (299, 932204), (322, 865618), (338, 824642), (364, 765739), (394, 707434), (598, 466102), (644, 432809), (676, 412321), (788, 353717), (1183, 235612), (1196, 233051), (1379, 202124), (2093, 133172), (2197, 126868), (2366, 117806), (2561, 108836), (2758, 101062), (3887, 71708), (4186, 66586), (4394, 63434), (4531, 61516), (4732, 58903), (5122, 54418), (5516, 50531), (7774, 35854), (8372, 33293), (8788, 31717), (9062, 30758), (10244, 27209), (15379, 18124), (15548, 17927)]