21123214

素因数分解:

$2^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:473

約数の個数: 48

約数和(自身を含む): 40383360

約数和(自身を除く): 19260146

約数列:

[1, 2, 7, 14, 17, 31, 34, 49, 62, 98, 119, 217, 238, 409, 434, 527, 818, 833, 1054, 1519, 1666, 2863, 3038, 3689, 5726, 6953, 7378, 12679, 13906, 20041, 25358, 25823, 40082, 48671, 51646, 88753, 97342, 177506, 215543, 340697, 431086, 621271, 681394, 1242542, 1508801, 3017602, 10561607, 21123214]

約数ペア:

[(1, 21123214), (2, 10561607), (7, 3017602), (14, 1508801), (17, 1242542), (31, 681394), (34, 621271), (49, 431086), (62, 340697), (98, 215543), (119, 177506), (217, 97342), (238, 88753), (409, 51646), (434, 48671), (527, 40082), (818, 25823), (833, 25358), (1054, 20041), (1519, 13906), (1666, 12679), (2863, 7378), (3038, 6953), (3689, 5726)]