205840

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{83}}^1$

素因数の和:127

約数の個数: 40

約数和(自身を含む): 499968

約数和(自身を除く): 294128

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 83, 124, 155, 166, 248, 310, 332, 415, 496, 620, 664, 830, 1240, 1328, 1660, 2480, 2573, 3320, 5146, 6640, 10292, 12865, 20584, 25730, 41168, 51460, 102920, 205840]

約数ペア:

[(1, 205840), (2, 102920), (4, 51460), (5, 41168), (8, 25730), (10, 20584), (16, 12865), (20, 10292), (31, 6640), (40, 5146), (62, 3320), (80, 2573), (83, 2480), (124, 1660), (155, 1328), (166, 1240), (248, 830), (310, 664), (332, 620), (415, 496)]