18991518

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4969}}^1$

素因数の和:5001

約数の個数: 48

約数和(自身を含む): 47592720

約数和(自身を除く): 28601202

約数列:

[1, 2, 3, 6, 7, 13, 14, 21, 26, 39, 42, 49, 78, 91, 98, 147, 182, 273, 294, 546, 637, 1274, 1911, 3822, 4969, 9938, 14907, 29814, 34783, 64597, 69566, 104349, 129194, 193791, 208698, 243481, 387582, 452179, 486962, 730443, 904358, 1356537, 1460886, 2713074, 3165253, 6330506, 9495759, 18991518]

約数ペア:

[(1, 18991518), (2, 9495759), (3, 6330506), (6, 3165253), (7, 2713074), (13, 1460886), (14, 1356537), (21, 904358), (26, 730443), (39, 486962), (42, 452179), (49, 387582), (78, 243481), (91, 208698), (98, 193791), (147, 129194), (182, 104349), (273, 69566), (294, 64597), (546, 34783), (637, 29814), (1274, 14907), (1911, 9938), (3822, 4969)]