18887552

素因数分解:

$2^7\times {\mathrm{41}}^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1$

素因数の和:175

約数の個数: 64

約数和(自身を含む): 39841200

約数和(自身を除く): 20953648

約数列:

[1, 2, 4, 8, 16, 32, 41, 59, 61, 64, 82, 118, 122, 128, 164, 236, 244, 328, 472, 488, 656, 944, 976, 1312, 1888, 1952, 2419, 2501, 2624, 3599, 3776, 3904, 4838, 5002, 5248, 7198, 7552, 7808, 9676, 10004, 14396, 19352, 20008, 28792, 38704, 40016, 57584, 77408, 80032, 115168, 147559, 154816, 160064, 230336, 295118, 309632, 320128, 460672, 590236, 1180472, 2360944, 4721888, 9443776, 18887552]

約数ペア:

[(1, 18887552), (2, 9443776), (4, 4721888), (8, 2360944), (16, 1180472), (32, 590236), (41, 460672), (59, 320128), (61, 309632), (64, 295118), (82, 230336), (118, 160064), (122, 154816), (128, 147559), (164, 115168), (236, 80032), (244, 77408), (328, 57584), (472, 40016), (488, 38704), (656, 28792), (944, 20008), (976, 19352), (1312, 14396), (1888, 10004), (1952, 9676), (2419, 7808), (2501, 7552), (2624, 7198), (3599, 5248), (3776, 5002), (3904, 4838)]