20358320

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{8209}}^1$

素因数の和:8253

約数の個数: 40

約数和(自身を含む): 48865920

約数和(自身を除く): 28507600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 8209, 16418, 32836, 41045, 65672, 82090, 131344, 164180, 254479, 328360, 508958, 656720, 1017916, 1272395, 2035832, 2544790, 4071664, 5089580, 10179160, 20358320]

約数ペア:

[(1, 20358320), (2, 10179160), (4, 5089580), (5, 4071664), (8, 2544790), (10, 2035832), (16, 1272395), (20, 1017916), (31, 656720), (40, 508958), (62, 328360), (80, 254479), (124, 164180), (155, 131344), (248, 82090), (310, 65672), (496, 41045), (620, 32836), (1240, 16418), (2480, 8209)]