216659940

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{515857}}^1$

素因数の和:515876

約数の個数: 48

約数和(自身を含む): 693313152

約数和(自身を除く): 476653212

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 515857, 1031714, 1547571, 2063428, 2579285, 3095142, 3610999, 5158570, 6190284, 7221998, 7737855, 10317140, 10832997, 14443996, 15475710, 18054995, 21665994, 30951420, 36109990, 43331988, 54164985, 72219980, 108329970, 216659940]

約数ペア:

[(1, 216659940), (2, 108329970), (3, 72219980), (4, 54164985), (5, 43331988), (6, 36109990), (7, 30951420), (10, 21665994), (12, 18054995), (14, 15475710), (15, 14443996), (20, 10832997), (21, 10317140), (28, 7737855), (30, 7221998), (35, 6190284), (42, 5158570), (60, 3610999), (70, 3095142), (84, 2579285), (105, 2063428), (140, 1547571), (210, 1031714), (420, 515857)]