399323648

素因数分解:

$2^9\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{181}}^1$

素因数の和:369

約数の個数: 80

約数和(自身を含む): 834113280

約数和(自身を除く): 434789632

約数列:

[1, 2, 4, 8, 16, 31, 32, 62, 64, 124, 128, 139, 181, 248, 256, 278, 362, 496, 512, 556, 724, 992, 1112, 1448, 1984, 2224, 2896, 3968, 4309, 4448, 5611, 5792, 7936, 8618, 8896, 11222, 11584, 15872, 17236, 17792, 22444, 23168, 25159, 34472, 35584, 44888, 46336, 50318, 68944, 71168, 89776, 92672, 100636, 137888, 179552, 201272, 275776, 359104, 402544, 551552, 718208, 779929, 805088, 1103104, 1436416, 1559858, 1610176, 2206208, 2872832, 3119716, 3220352, 6239432, 6440704, 12478864, 12881408, 24957728, 49915456, 99830912, 199661824, 399323648]

約数ペア:

[(1, 399323648), (2, 199661824), (4, 99830912), (8, 49915456), (16, 24957728), (31, 12881408), (32, 12478864), (62, 6440704), (64, 6239432), (124, 3220352), (128, 3119716), (139, 2872832), (181, 2206208), (248, 1610176), (256, 1559858), (278, 1436416), (362, 1103104), (496, 805088), (512, 779929), (556, 718208), (724, 551552), (992, 402544), (1112, 359104), (1448, 275776), (1984, 201272), (2224, 179552), (2896, 137888), (3968, 100636), (4309, 92672), (4448, 89776), (5611, 71168), (5792, 68944), (7936, 50318), (8618, 46336), (8896, 44888), (11222, 35584), (11584, 34472), (15872, 25159), (17236, 23168), (17792, 22444)]