21289129472

素因数分解:

$2^9\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103177}}^1$

素因数の和:103239

約数の個数: 80

約数和(自身を含む): 47286890112

約数和(自身を除く): 25997760640

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 32, 52, 62, 64, 104, 124, 128, 208, 248, 256, 403, 416, 496, 512, 806, 832, 992, 1612, 1664, 1984, 3224, 3328, 3968, 6448, 6656, 7936, 12896, 15872, 25792, 51584, 103168, 103177, 206336, 206354, 412708, 825416, 1341301, 1650832, 2682602, 3198487, 3301664, 5365204, 6396974, 6603328, 10730408, 12793948, 13206656, 21460816, 25587896, 26413312, 41580331, 42921632, 51175792, 52826624, 83160662, 85843264, 102351584, 166321324, 171686528, 204703168, 332642648, 343373056, 409406336, 665285296, 686746112, 818812672, 1330570592, 1637625344, 2661141184, 5322282368, 10644564736, 21289129472]

約数ペア:

[(1, 21289129472), (2, 10644564736), (4, 5322282368), (8, 2661141184), (13, 1637625344), (16, 1330570592), (26, 818812672), (31, 686746112), (32, 665285296), (52, 409406336), (62, 343373056), (64, 332642648), (104, 204703168), (124, 171686528), (128, 166321324), (208, 102351584), (248, 85843264), (256, 83160662), (403, 52826624), (416, 51175792), (496, 42921632), (512, 41580331), (806, 26413312), (832, 25587896), (992, 21460816), (1612, 13206656), (1664, 12793948), (1984, 10730408), (3224, 6603328), (3328, 6396974), (3968, 5365204), (6448, 3301664), (6656, 3198487), (7936, 2682602), (12896, 1650832), (15872, 1341301), (25792, 825416), (51584, 412708), (103168, 206354), (103177, 206336)]