20490144

素因数分解:

$2^5\times 3^1\times {\mathrm{61}}^1\times {\mathrm{3499}}^1$

素因数の和:3573

約数の個数: 48

約数和(自身を含む): 54684000

約数和(自身を除く): 34193856

約数列:

[1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, 61, 96, 122, 183, 244, 366, 488, 732, 976, 1464, 1952, 2928, 3499, 5856, 6998, 10497, 13996, 20994, 27992, 41988, 55984, 83976, 111968, 167952, 213439, 335904, 426878, 640317, 853756, 1280634, 1707512, 2561268, 3415024, 5122536, 6830048, 10245072, 20490144]

約数ペア:

[(1, 20490144), (2, 10245072), (3, 6830048), (4, 5122536), (6, 3415024), (8, 2561268), (12, 1707512), (16, 1280634), (24, 853756), (32, 640317), (48, 426878), (61, 335904), (96, 213439), (122, 167952), (183, 111968), (244, 83976), (366, 55984), (488, 41988), (732, 27992), (976, 20994), (1464, 13996), (1952, 10497), (2928, 6998), (3499, 5856)]