180392720

素因数分解:

$2^4\times 5^1\times {\mathrm{31}}^1\times {\mathrm{72739}}^1$

素因数の和:72783

約数の個数: 40

約数和(自身を含む): 432948480

約数和(自身を除く): 252555760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 31, 40, 62, 80, 124, 155, 248, 310, 496, 620, 1240, 2480, 72739, 145478, 290956, 363695, 581912, 727390, 1163824, 1454780, 2254909, 2909560, 4509818, 5819120, 9019636, 11274545, 18039272, 22549090, 36078544, 45098180, 90196360, 180392720]

約数ペア:

[(1, 180392720), (2, 90196360), (4, 45098180), (5, 36078544), (8, 22549090), (10, 18039272), (16, 11274545), (20, 9019636), (31, 5819120), (40, 4509818), (62, 2909560), (80, 2254909), (124, 1454780), (155, 1163824), (248, 727390), (310, 581912), (496, 363695), (620, 290956), (1240, 145478), (2480, 72739)]