205425280

素因数分解:

$2^7\times 5^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{239}}^1$

素因数の和:354

約数の個数: 128

約数和(自身を含む): 528768000

約数和(自身を除く): 323342720

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 79, 80, 85, 128, 136, 158, 160, 170, 239, 272, 316, 320, 340, 395, 478, 544, 632, 640, 680, 790, 956, 1088, 1195, 1264, 1343, 1360, 1580, 1912, 2176, 2390, 2528, 2686, 2720, 3160, 3824, 4063, 4780, 5056, 5372, 5440, 6320, 6715, 7648, 8126, 9560, 10112, 10744, 10880, 12640, 13430, 15296, 16252, 18881, 19120, 20315, 21488, 25280, 26860, 30592, 32504, 37762, 38240, 40630, 42976, 50560, 53720, 65008, 75524, 76480, 81260, 85952, 94405, 107440, 130016, 151048, 152960, 162520, 171904, 188810, 214880, 260032, 302096, 320977, 325040, 377620, 429760, 520064, 604192, 641954, 650080, 755240, 859520, 1208384, 1283908, 1300160, 1510480, 1604885, 2416768, 2567816, 2600320, 3020960, 3209770, 5135632, 6041920, 6419540, 10271264, 12083840, 12839080, 20542528, 25678160, 41085056, 51356320, 102712640, 205425280]

約数ペア:

[(1, 205425280), (2, 102712640), (4, 51356320), (5, 41085056), (8, 25678160), (10, 20542528), (16, 12839080), (17, 12083840), (20, 10271264), (32, 6419540), (34, 6041920), (40, 5135632), (64, 3209770), (68, 3020960), (79, 2600320), (80, 2567816), (85, 2416768), (128, 1604885), (136, 1510480), (158, 1300160), (160, 1283908), (170, 1208384), (239, 859520), (272, 755240), (316, 650080), (320, 641954), (340, 604192), (395, 520064), (478, 429760), (544, 377620), (632, 325040), (640, 320977), (680, 302096), (790, 260032), (956, 214880), (1088, 188810), (1195, 171904), (1264, 162520), (1343, 152960), (1360, 151048), (1580, 130016), (1912, 107440), (2176, 94405), (2390, 85952), (2528, 81260), (2686, 76480), (2720, 75524), (3160, 65008), (3824, 53720), (4063, 50560), (4780, 42976), (5056, 40630), (5372, 38240), (5440, 37762), (6320, 32504), (6715, 30592), (7648, 26860), (8126, 25280), (9560, 21488), (10112, 20315), (10744, 19120), (10880, 18881), (12640, 16252), (13430, 15296)]