19908660

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{449}}^1\times {\mathrm{739}}^1$

素因数の和:1200

約数の個数: 48

約数和(自身を含む): 55944000

約数和(自身を除く): 36035340

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 449, 739, 898, 1347, 1478, 1796, 2217, 2245, 2694, 2956, 3695, 4434, 4490, 5388, 6735, 7390, 8868, 8980, 11085, 13470, 14780, 22170, 26940, 44340, 331811, 663622, 995433, 1327244, 1659055, 1990866, 3318110, 3981732, 4977165, 6636220, 9954330, 19908660]

約数ペア:

[(1, 19908660), (2, 9954330), (3, 6636220), (4, 4977165), (5, 3981732), (6, 3318110), (10, 1990866), (12, 1659055), (15, 1327244), (20, 995433), (30, 663622), (60, 331811), (449, 44340), (739, 26940), (898, 22170), (1347, 14780), (1478, 13470), (1796, 11085), (2217, 8980), (2245, 8868), (2694, 7390), (2956, 6735), (3695, 5388), (4434, 4490)]