20565560

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{7043}}^1$

素因数の和:7127

約数の個数: 32

約数和(自身を含む): 46913040

約数和(自身を除く): 26347480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 7043, 14086, 28172, 35215, 56344, 70430, 140860, 281720, 514139, 1028278, 2056556, 2570695, 4113112, 5141390, 10282780, 20565560]

約数ペア:

[(1, 20565560), (2, 10282780), (4, 5141390), (5, 4113112), (8, 2570695), (10, 2056556), (20, 1028278), (40, 514139), (73, 281720), (146, 140860), (292, 70430), (365, 56344), (584, 35215), (730, 28172), (1460, 14086), (2920, 7043)]