81619840

素因数分解:

$2^7\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1747}}^1$

素因数の和:1839

約数の個数: 64

約数和(自身を含む): 197908560

約数和(自身を除く): 116288720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 73, 80, 128, 146, 160, 292, 320, 365, 584, 640, 730, 1168, 1460, 1747, 2336, 2920, 3494, 4672, 5840, 6988, 8735, 9344, 11680, 13976, 17470, 23360, 27952, 34940, 46720, 55904, 69880, 111808, 127531, 139760, 223616, 255062, 279520, 510124, 559040, 637655, 1020248, 1118080, 1275310, 2040496, 2550620, 4080992, 5101240, 8161984, 10202480, 16323968, 20404960, 40809920, 81619840]

約数ペア:

[(1, 81619840), (2, 40809920), (4, 20404960), (5, 16323968), (8, 10202480), (10, 8161984), (16, 5101240), (20, 4080992), (32, 2550620), (40, 2040496), (64, 1275310), (73, 1118080), (80, 1020248), (128, 637655), (146, 559040), (160, 510124), (292, 279520), (320, 255062), (365, 223616), (584, 139760), (640, 127531), (730, 111808), (1168, 69880), (1460, 55904), (1747, 46720), (2336, 34940), (2920, 27952), (3494, 23360), (4672, 17470), (5840, 13976), (6988, 11680), (8735, 9344)]