81361720

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{184913}}^1$

素因数の和:184935

約数の個数: 32

約数和(自身を含む): 199707120

約数和(自身を除く): 118345400

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 184913, 369826, 739652, 924565, 1479304, 1849130, 2034043, 3698260, 4068086, 7396520, 8136172, 10170215, 16272344, 20340430, 40680860, 81361720]

約数ペア:

[(1, 81361720), (2, 40680860), (4, 20340430), (5, 16272344), (8, 10170215), (10, 8136172), (11, 7396520), (20, 4068086), (22, 3698260), (40, 2034043), (44, 1849130), (55, 1479304), (88, 924565), (110, 739652), (220, 369826), (440, 184913)]