19685380

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{6883}}^1$

素因数の和:6916

約数の個数: 48

約数和(自身を含む): 48573504

約数和(自身を除く): 28888124

約数列:

[1, 2, 4, 5, 10, 11, 13, 20, 22, 26, 44, 52, 55, 65, 110, 130, 143, 220, 260, 286, 572, 715, 1430, 2860, 6883, 13766, 27532, 34415, 68830, 75713, 89479, 137660, 151426, 178958, 302852, 357916, 378565, 447395, 757130, 894790, 984269, 1514260, 1789580, 1968538, 3937076, 4921345, 9842690, 19685380]

約数ペア:

[(1, 19685380), (2, 9842690), (4, 4921345), (5, 3937076), (10, 1968538), (11, 1789580), (13, 1514260), (20, 984269), (22, 894790), (26, 757130), (44, 447395), (52, 378565), (55, 357916), (65, 302852), (110, 178958), (130, 151426), (143, 137660), (220, 89479), (260, 75713), (286, 68830), (572, 34415), (715, 27532), (1430, 13766), (2860, 6883)]