20787488

素因数分解:

$2^5\times {\mathrm{37}}^1\times {\mathrm{97}}^1\times {\mathrm{181}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 42699384

約数和(自身を除く): 21911896

約数列:

[1, 2, 4, 8, 16, 32, 37, 74, 97, 148, 181, 194, 296, 362, 388, 592, 724, 776, 1184, 1448, 1552, 2896, 3104, 3589, 5792, 6697, 7178, 13394, 14356, 17557, 26788, 28712, 35114, 53576, 57424, 70228, 107152, 114848, 140456, 214304, 280912, 561824, 649609, 1299218, 2598436, 5196872, 10393744, 20787488]

約数ペア:

[(1, 20787488), (2, 10393744), (4, 5196872), (8, 2598436), (16, 1299218), (32, 649609), (37, 561824), (74, 280912), (97, 214304), (148, 140456), (181, 114848), (194, 107152), (296, 70228), (362, 57424), (388, 53576), (592, 35114), (724, 28712), (776, 26788), (1184, 17557), (1448, 14356), (1552, 13394), (2896, 7178), (3104, 6697), (3589, 5792)]