72689920

素因数分解:

$2^8\times 5^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:651

約数の個数: 72

約数和(自身を含む): 176049720

約数和(自身を除く): 103359800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 128, 160, 218, 256, 320, 436, 521, 545, 640, 872, 1042, 1090, 1280, 1744, 2084, 2180, 2605, 3488, 4168, 4360, 5210, 6976, 8336, 8720, 10420, 13952, 16672, 17440, 20840, 27904, 33344, 34880, 41680, 56789, 66688, 69760, 83360, 113578, 133376, 139520, 166720, 227156, 283945, 333440, 454312, 567890, 666880, 908624, 1135780, 1817248, 2271560, 3634496, 4543120, 7268992, 9086240, 14537984, 18172480, 36344960, 72689920]

約数ペア:

[(1, 72689920), (2, 36344960), (4, 18172480), (5, 14537984), (8, 9086240), (10, 7268992), (16, 4543120), (20, 3634496), (32, 2271560), (40, 1817248), (64, 1135780), (80, 908624), (109, 666880), (128, 567890), (160, 454312), (218, 333440), (256, 283945), (320, 227156), (436, 166720), (521, 139520), (545, 133376), (640, 113578), (872, 83360), (1042, 69760), (1090, 66688), (1280, 56789), (1744, 41680), (2084, 34880), (2180, 33344), (2605, 27904), (3488, 20840), (4168, 17440), (4360, 16672), (5210, 13952), (6976, 10420), (8336, 8720)]