18172480

素因数分解:

$2^6\times 5^1\times {\mathrm{109}}^1\times {\mathrm{521}}^1$

素因数の和:647

約数の個数: 56

約数和(自身を含む): 43754040

約数和(自身を除く): 25581560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 109, 160, 218, 320, 436, 521, 545, 872, 1042, 1090, 1744, 2084, 2180, 2605, 3488, 4168, 4360, 5210, 6976, 8336, 8720, 10420, 16672, 17440, 20840, 33344, 34880, 41680, 56789, 83360, 113578, 166720, 227156, 283945, 454312, 567890, 908624, 1135780, 1817248, 2271560, 3634496, 4543120, 9086240, 18172480]

約数ペア:

[(1, 18172480), (2, 9086240), (4, 4543120), (5, 3634496), (8, 2271560), (10, 1817248), (16, 1135780), (20, 908624), (32, 567890), (40, 454312), (64, 283945), (80, 227156), (109, 166720), (160, 113578), (218, 83360), (320, 56789), (436, 41680), (521, 34880), (545, 33344), (872, 20840), (1042, 17440), (1090, 16672), (1744, 10420), (2084, 8720), (2180, 8336), (2605, 6976), (3488, 5210), (4168, 4360)]