18987520

素因数分解:

$2^9\times 5^1\times {\mathrm{7417}}^1$

素因数の和:7440

約数の個数: 40

約数和(自身を含む): 45531684

約数和(自身を除く): 26544164

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1280, 2560, 7417, 14834, 29668, 37085, 59336, 74170, 118672, 148340, 237344, 296680, 474688, 593360, 949376, 1186720, 1898752, 2373440, 3797504, 4746880, 9493760, 18987520]

約数ペア:

[(1, 18987520), (2, 9493760), (4, 4746880), (5, 3797504), (8, 2373440), (10, 1898752), (16, 1186720), (20, 949376), (32, 593360), (40, 474688), (64, 296680), (80, 237344), (128, 148340), (160, 118672), (256, 74170), (320, 59336), (512, 37085), (640, 29668), (1280, 14834), (2560, 7417)]