21497866240

素因数分解:

$2^{11}\times 5^1\times {\mathrm{431}}^1\times {\mathrm{4871}}^1$

素因数の和:5329

約数の個数: 96

約数和(自身を含む): 51712577280

約数和(自身を除く): 30214711040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 431, 512, 640, 862, 1024, 1280, 1724, 2048, 2155, 2560, 3448, 4310, 4871, 5120, 6896, 8620, 9742, 10240, 13792, 17240, 19484, 24355, 27584, 34480, 38968, 48710, 55168, 68960, 77936, 97420, 110336, 137920, 155872, 194840, 220672, 275840, 311744, 389680, 441344, 551680, 623488, 779360, 882688, 1103360, 1246976, 1558720, 2099401, 2206720, 2493952, 3117440, 4198802, 4413440, 4987904, 6234880, 8397604, 9975808, 10497005, 12469760, 16795208, 20994010, 24939520, 33590416, 41988020, 49879040, 67180832, 83976040, 134361664, 167952080, 268723328, 335904160, 537446656, 671808320, 1074893312, 1343616640, 2149786624, 2687233280, 4299573248, 5374466560, 10748933120, 21497866240]

約数ペア:

[(1, 21497866240), (2, 10748933120), (4, 5374466560), (5, 4299573248), (8, 2687233280), (10, 2149786624), (16, 1343616640), (20, 1074893312), (32, 671808320), (40, 537446656), (64, 335904160), (80, 268723328), (128, 167952080), (160, 134361664), (256, 83976040), (320, 67180832), (431, 49879040), (512, 41988020), (640, 33590416), (862, 24939520), (1024, 20994010), (1280, 16795208), (1724, 12469760), (2048, 10497005), (2155, 9975808), (2560, 8397604), (3448, 6234880), (4310, 4987904), (4871, 4413440), (5120, 4198802), (6896, 3117440), (8620, 2493952), (9742, 2206720), (10240, 2099401), (13792, 1558720), (17240, 1246976), (19484, 1103360), (24355, 882688), (27584, 779360), (34480, 623488), (38968, 551680), (48710, 441344), (55168, 389680), (68960, 311744), (77936, 275840), (97420, 220672), (110336, 194840), (137920, 155872)]