321139980

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{254873}}^1$

素因数の和:254895

約数の個数: 72

約数和(自身を含む): 1113289632

約数和(自身を除く): 792149652

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 254873, 509746, 764619, 1019492, 1274365, 1529238, 1784111, 2293857, 2548730, 3058476, 3568222, 3823095, 4587714, 5097460, 5352333, 7136444, 7646190, 8920555, 9175428, 10704666, 11469285, 15292380, 16056999, 17841110, 21409332, 22938570, 26761665, 32113998, 35682220, 45877140, 53523330, 64227996, 80284995, 107046660, 160569990, 321139980]

約数ペア:

[(1, 321139980), (2, 160569990), (3, 107046660), (4, 80284995), (5, 64227996), (6, 53523330), (7, 45877140), (9, 35682220), (10, 32113998), (12, 26761665), (14, 22938570), (15, 21409332), (18, 17841110), (20, 16056999), (21, 15292380), (28, 11469285), (30, 10704666), (35, 9175428), (36, 8920555), (42, 7646190), (45, 7136444), (60, 5352333), (63, 5097460), (70, 4587714), (84, 3823095), (90, 3568222), (105, 3058476), (126, 2548730), (140, 2293857), (180, 1784111), (210, 1529238), (252, 1274365), (315, 1019492), (420, 764619), (630, 509746), (1260, 254873)]