20121653888

素因数分解:

$2^7\times 7^1\times {\mathrm{401}}^1\times {\mathrm{56003}}^1$

素因数の和:56425

約数の個数: 64

約数和(自身を含む): 45927760320

約数和(自身を除く): 25806106432

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 32, 56, 64, 112, 128, 224, 401, 448, 802, 896, 1604, 2807, 3208, 5614, 6416, 11228, 12832, 22456, 25664, 44912, 51328, 56003, 89824, 112006, 179648, 224012, 359296, 392021, 448024, 784042, 896048, 1568084, 1792096, 3136168, 3584192, 6272336, 7168384, 12544672, 22457203, 25089344, 44914406, 50178688, 89828812, 157200421, 179657624, 314400842, 359315248, 628801684, 718630496, 1257603368, 1437260992, 2515206736, 2874521984, 5030413472, 10060826944, 20121653888]

約数ペア:

[(1, 20121653888), (2, 10060826944), (4, 5030413472), (7, 2874521984), (8, 2515206736), (14, 1437260992), (16, 1257603368), (28, 718630496), (32, 628801684), (56, 359315248), (64, 314400842), (112, 179657624), (128, 157200421), (224, 89828812), (401, 50178688), (448, 44914406), (802, 25089344), (896, 22457203), (1604, 12544672), (2807, 7168384), (3208, 6272336), (5614, 3584192), (6416, 3136168), (11228, 1792096), (12832, 1568084), (22456, 896048), (25664, 784042), (44912, 448024), (51328, 392021), (56003, 359296), (89824, 224012), (112006, 179648)]